This mineral is needed in small amounts every day in order to maintain your health and perform important functions. According to the World Health Organizationmillions of people throughout the world may have inadequate levels of zinc in their diets. In fact, zinc deficiency is ranked the fifth-leading risk factor in causing disease worldwide. The good news is that if people consume enough foods high in zinc, like the top ten sources listed below, they can prevent inadequate zinc levels and reap the benefits of this essential mineral.
This is due to the absence of compounds that inhibit zinc absorption in animal foods and the presence of sulfur-containing amino acids that improve zinc absorption, like cysteine and methionine. However, the inhibitory effects of phytic acid on the absorption of zinc can be minimized with methods like soaking, heating, sprouting, fermenting and leavening.
Research also shows that the absorption of zinc can be improved by using yeast-based breads and sourdough breads, sprouts, and presoaked legumes.
The best way to achieve optimal zinc levels is to consume two to three servings of these zinc foods per day :. Lamb is a rich source of many vitamins minerals. In addition to zinc, lamb contains vitamin B12, riboflavin, selenium, niacin, phosphorus and iron.
Pumpkin seeds and pumpkin seed oil are shown to be a key food for maintaining health in post-menopausal women. Pumpkin seeds are also good for prostate health, and they promote your mental health. Not only are hemp seeds rich in zinc, but they are an excellent source of omega-3 and omega-6 fatty acids, which have beneficial effects on your cardiovascular system and helps to keep inflammation at bay.
Grass-fed beef nutrition includes omega-3 fatty acids and conjugated linoleic acid, a powerful polyunsaturated fatty acid that has been shown to helps reduce the risk of heart disease, improve blood sugar, discourage weight gain and build muscle. Chickpeaslike all legumes, are a form of complex carbohydrates that the body is able to slowly digest and use for energy. Studies show that chickpeas increase satiety and help with weight loss. They also improve digestion by quickly moving foods through the digestive tract.
Lentils are known for their health-promoting effectsas they are rich in polyphenols and micronutrients, including zinc. Lentils serve as a plant-based protein, making them an excellent zinc rich food for vegetarians.
Cocoa powder is a good source of two flavonoids, epicatechin and catechin, which function as antioxidants that help prevent inflammation and disease. Because of the presence of flavonoids in cocoa powder, it helps improve blood flow and lower blood pressure, too.
Cashews are rich in unsaturated fatty acids and high in protein.
Cashews nutrition helps fight heart disease, reduce inflammation, promote bone health and support healthy brain function. Plus, cashews have a good zinc to copper ratio, to help ensure that both of these minerals stay in balance. Kefir and yogurt are cultured dairy products that serve as probiotic foods.
Both kefir and probiotic yogurt support healthy digestion, boost the immune system, promote cardiovascular health and regulate your mood. Ricotta cheese is one of the healthiest cheese options because it contains notable amounts of healthy fatty acids and micronutrients, including zinc.
Proven mushroom nutrition benefits include the ability to boost immunity due to its antioxidant activities and reduce inflammation.
Zinc (ZDDP) and Motor Oil: How Zinc Affects Your Engine
Spinach is one of the most nutrient-dense foods in existence. It contains special protective carotenoids that have been linked with decreasing the risk of many diseases, including heart disease, obesity, diabetes, neurodegenerative diseases and even more.
And research shows that avocado consumption is associated with better diet quality and nutrient intake. The vitamin B12 in chicken helps maintain energy levels, boost mood, maintain heart health and boost skin health. Wondering which nuts are high in zinc? Almonds nutrition is truly remarkable and many studies show that it benefits many aspects of health, including cardiovascular health and weight control.
In addition to its zinc content, almonds also provide vitamin E, manganese, magnesium and riboflavin, among other important micronutrients.
Here are some easy and healthy recipes that will help to boost your zinc intake:. Josh Axe is on a mission to provide you and your family with the highest quality nutrition tips and healthy recipes in the world More Nutrition Dr.
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Top 15 Foods High in Zinc
Axe on Twitter 22 Dr.Remember Me? What's New? Results 1 to 2 of 2. Join Date May Posts The results show us how various oils compare when it comes to wear protection. And we can use that information to make an informed decision as to which oil we want to select for our engines. But, the truth is, like all things in life, motor oils are NOT all created equal. And some oils are simply better than others, no matter what their zinc levels are.
Anyone would have to be delusional to think otherwise. Some folks, who REALLY believe the notion that more zinc in their oil will provide more wear protection, often throw a tizzy fit and get very nasty when test data shows a low zinc oil providing better wear protection than a high zinc oil. But, the fact is, behavior like that will NOT change the facts regarding what oils provide excellent wear protection and what oils do not.
That way, all the oils are on an even playing field. However, true zinc lovers will no doubt be disappointed, because not all high zinc oils tested well, even though they all have plenty of zinc.
And it was also found that ZDDP above 2, ppm, started attacking the grain boundaries in the iron, resulting in camshaft spalling. The tests were repeated multiple times for each oil, and even though all the results for each oil were consistent within a few percent, those results were averaged to arrive at the most accurate and representative final psi numbers shown below. Provides excellent protection from metal to metal contact.
These claims were obviously created by the Marketing Department with no regard for what this oil can actually do. And it ranked only 34th out of the 40 oils examined here. Once again, here is an oil with high levels of zinc that DID NOT help it perform very well, even among other high zinc oils.
Buyer beware. Motor oils are among the worst products for false advertising. That is NOT a typo. And the values listed below are all just the way they came back from the Lab.
If you average the zinc and phos values of this Summit Racing Oil, you come up with ppm. But, for quick and dirty mental calculations, you can just figure the ZDDP value as approximately half way between the zinc and phos levels. And that is precisely what we see here.
Just the opposite of what was promised. So, the results above show 2 distinct things: 1. My tester and test procedure have no problem at all showing excellent performing high zinc oils.
Therefore, no one can justifiably argue that my testing somehow works against high zinc oils.First, narrow the options down by choosing the closest-related category to your question. What are the benefits of using racing oil versus regular passenger car oil? Its primary role is to prevent metal-to-metal contact between engine parts by forming a protective film.
Despite being referred to as zinc, ZDDP also contains phosphorus, which helps to perform the anti-wear function in the motor oil. With ever increasing limits on emissions, automobile manufacturers have tightened emission control systems on newer vehicles.
This is one of several factors considered when the American Petroleum Institute API sets standards for motor oil with zinc. Because phosphorus can poison a vehicle's emission system, the level of zinc is lower for current motor oil. What is the controversy surrounding the amount of zinc in motor oil? The controversy exists as a result of many hands-on car enthusiasts and engine experts belief that lower levels of zinc in API SN and SM motor oils can cause excessive wear in older style push-rod and flat-tappet engines.
They hold this belief despite the fact that all new motor oil classifications are intended to be backward compatible.
Valvoline VR1 Racing Oil contains. Keep in mind that zinc additives are corrosive above certain levels and can harm your engine. Valvoline VR1 racing oil is conventional, non-synthetic racing oil.
X This is the cookie disclaimer text. Partner Login. Valvoline provides this product in both multi and mono viscosity grades: 20w50, straight 50, 10w30, straight 30, straight 40 and straight Is there zinc in your motor oil?
Is there enough or too much? When looking for oil or oil additive products to add to your engine, you may wonder where zinc comes in. Here is what you need to know about zinc and motor oil. There are four options for you to choose from:. If you want to get better performance and longer life out of your car, you should put in something superior to conventional oil, especially if you do a lot of urban stop-and-go driving which can be hard on your engine.
All the motor oil you put in your car has some zinc, but typically very low levels. The reason you have zinc in your motor oil is to protect the camshaft. The camshaft allows the oil to get into the engine by pushing open the engine valves as it rotates while you are driving. When you drive at high speeds, a great deal of pressure can build up between the lobes of the camshaft and the parts that press against them, called followers. At this high pressure, motor oil squeezes out and can wear down the parts.
Zinc ZDDP and ZDTP is especially useful for cars with flat-tappet camshafts, which means a lot of classic cars, hot rods and older muscle cars need zinc more than other cars.
Higher zinc levels in oil typically are for performance cars on the whole.
When some of that zinc turns to ash and travels down your exhaust pipe, it ends up in your catalytic converter, and zinc ash is not good for catalytic converters. In fact, enough zinc ash in your catalytic converter can reduce its life.
Do you use zinc in your oil or not? If you have a newer car, this should not be a problem. Stock engines for new cars are designed with a lower zinc content of modern oils in mind, and you should use them without excess wear on your camshaft.
However, if you are using an older car or a custom car with non-stock parts again, classic cars, hot rods, older muscle carsyou may need greater zinc content than current oils offer. Ignoring the problem could quickly lead to a worn-out camshaft. So, how do you resolve this problem?
What can you do? The solution is to add a zinc supplement to your oil. This is a real ZDDP-containing oil supplement you can add to modern conventional oil in your engine to make that oil work like the zinc-rich oil of old you need. With this supplement, you can increase your engine life and confidently use the motor oils modern cars use. Posted on August 1st, by thomas liquori.
Synthetic oil is treated to have fewer impurities and operates much better than conventional oil at extreme temperatures. It is treated for more impurities than conventional oil but cheaper than fully synthetic oil. If you feel you are getting sufficient performance with synthetic blend, you may want to save a few bucks rather than go full synthetic.
This type of oil contains leak prevention additives, seal conditioners and other products to help extend the life of your engine. It also costs more, but if you are trying to squeeze the most life possible out of an older car, this is the type of oil you should use.
Posted in: UncategorizedEngineGeneralOil.Is your question still unanswered? Please submit your question in the form below. In determining which questions to answer and post on this site, we strictly adhere to ExxonMobil's policy of not disclosing proprietary formulae or performance-testing information; nor will we address inquiries requesting comparisons with competitive products.
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Our technical experts are here to help Search our archives. I agree to the terms and conditions Click here for terms and conditions. Go back to all questions. Related topics All about oil FAQs. Find the right oil and filter. All Rights Reserved.If you buy something through a link on this page, we may earn a small commission. How this works. Zinc is a nutrient that plays a vital role in immune system response, wound healing, synthesizing proteins and DNA, and many other bodily functions.
The human body does not store zinc, so a person has to get enough from their daily diet. They can also take supplements, if necessary. In this article, learn about the benefits of zinc and which foods to eat to ensure adequate intake. It is well known that of all food types, oysters contain the most zinc per serving. However, most people get their zinc from poultry and red meat.
Food manufacturers may also fortify foods with zinc to help a person meet their daily requirements. Examples of foods high in zinc include :. Without proper planning, vegan and vegetarian diets can result in deficiencies in nutrients such as vitamin B, iron, calciumiodine, vitamin Dand zinc. Vegetable based zinc sources are not as bioavailable as animal based sources, which means that the body does not absorb zinc from vegetarian sources as effectively.
This means that male vegans and vegetarians may need to eat about If a person chooses to supplement their diet with zinc, they may wish to avoid taking it at the same time as supplements of calciumcopperfolic acidiron, and magnesium. This is because these nutrients can affect how the body absorbs zinc.
According to the NIHmost children and adults consume enough zinc. Older adults, however, may not get the recommended intake. Doctors do not have an easy blood test to determine if a person is zinc deficient. Conversely, a person can also experience zinc toxicity from excess zinc supplementation. However, eating foods high in zinc — even in large amounts — does not usually cause symptoms. Meat based products are usually higher in bioavailable zinc.
If a person does not eat meat, they may need to make an effort to increase their zinc intake through eating beans, seeds, and oats, among other zinc-containing foods. Although zinc deficiencies are rare in the United States, people should always speak to a doctor if they have concerns about their nutrient intake.
People can find zinc supplements at their local pharmacy, drugstore, and online. Zinc is a trace element that is essential for regulating the immune system.
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The top foods high in zinc
Potassium is a nutrient that is key to good heart health. In this article, learn about the best high potassium foods that people can eat. Women have different nutritional needs to men. These needs can change throughout life and according to activity levels, medical conditions, and….
The top foods high in zinc. Medically reviewed by Kathy W. Warwick, R. Foods high in zinc For vegans and vegetarians Benefits Deficiency Summary If you buy something through a link on this page, we may earn a small commission.In several important ways, classic car engines are different than modern car engines. They are lower revving, they have larger metal-to-metal tolerances, and often have cork or rope seals.
They also require more anti-wear additives to prevent premature wear. For these reasons, the best oil for classic cars requires a little more thought than just grabbing your favorite brand off the parts-store shelf.
Most vintage and classic automotive engines have a push rod-operated valvetrain driven by a flat-tappet camshaft. In order to prevent premature cam and lifter wear, there must be an adequate amount of anti-wear additives. This was not a problem 30 or 40 years ago, but for environmental reasons, the quantity of an additive called ZDDP has been reduced significantly in modern oils. It's physical and functional properties make it ideal for use in oils and greases to help control oxidation and corrosion.
Levels for ZDDP in oils used to be 1, to 1, parts-per-million. Since the early nineties, manufacturers have been reducing this number. Late-model engines with roller camshafts have considerably less camshaft lobe friction, so they don't require high levels of zinc. Without the correct amount of ZDDP, older, push rod-style motors will wear prematurely.
The damage may not happen overnight, but over months or years, the lack of protection will prematurely wear cams, lifters, and other internal parts. The reason the ZDDP content was lowered in motor oil was to prevent the possible fouling of the catalytic converters.
Seems that the zinc and phosphates contained in it coats the active substrate in converters, which may contaminate it and decrease its life expectancy. During the break-in period of a freshly rebuilt engine, lack of proper lubrication can be fatal to internal parts, especially camshaft and lifters. After rebuilding an older engine, either add a ZDDP supplement or use a racing oil, which has a higher level of phosphorous in it.
After the engine break-in period you can go away from the racing oil if you like. Most engine and engine component manufacturers recommend a zinc and phosphorus content of more than 1, PPM for break-in, and most will void warranties if this minimum is not found in the oil sample you supply when returning broken parts for warranty. Today, many of the well-known oil companies are offering oils formulated for vintage and classic cars. These oils balance ZDDP, detergent levels, and corrosion inhibitors.
Castrol markets a "Classic XL" line of retro oils. Recommended for pre cars, their multi-grade 20W is formulated with high-quality mineral oils plus selected additives for older technology and classic car engines. Also in the "Classic XL" line is a 30W oil for pre vintage and classic cars. This mono-grade oil can also be used in most types of manually-operated gearboxes. Lucas "Hot Rod and Classic Car" motor oil is designed for use in all classic cars, sports cars, and muscle cars without catalytic converters.