Synthetic oil does not adequately protect older engines. As a result, high zinc-based motor oil is utilized in older engines. Zinc compounds in zinc oil aid in reducing friction in engine components. They are best suited for older engines that require improved lubrication and protection due to oil engine components. Because of its excellent performance and resistance to wear and tear, high zinc oil is also utilized in racing oil. 

Multiple brands sell high zinc-based motor oil. In this article, we will look at some famous brands along with their features and viscosity grade. 

Top High Zinc Motor Oil Brands 


Since 1866, Valvoline has been regarded as one of the market’s highest quality zinc motor oils. Its VR1 Racing contains a high concentration of zinc and phosphorus and is specially intended for increased protection in harsh situations. 

Valvoline offers high zinc motor oil in a wide range of viscosities.10W-30 and 20W-50 contain 1350-1400 ppm zinc, usually 13-14% of the total oil. 


  1. Double the amount of zinc for increased protection, avoid sludge, and reduce friction. 
  2. Use anti-foaming chemicals to prevent bubbles and foaming at high pressure. 

Viscosities: SAE-30, SAE-40, SAE-50, SAE-60, 10W-30, 20W-50


This brand has been on the market for several years and is mainly used in racing cars. Driven also offers a diverse range of components ideal for both racing and passenger vehicles. This brand’s oil is typically more expensive than other oils and can only be used in a limited number of engines. 

Driven 03806 Hr-5 has poor packing and is only designed for old vintage cars, and is not recommended for racing high-performance vehicles. Driven Racing Oil 02606 MR50 contains ZDDP, which provides additional protection and makes it acceptable for use in high temperatures. It is perfect for your racing car.  


  1. It has a high zinc concentration, making it suitable for racing cars.
  2. Lower emissions
  3. ZDDP additive, which contains anti-wear and anti-friction agents.

Viscosities: 15W-50, 5W-40, 5W-30,10W-30 


The Lucas brand offers a wide range of oil, grease, and additive-based goods. Lucas zinc oil forms a thick layer of film on your old engine, allowing it to run more efficiently and effectively. They also have coolants on hand to assist you in operating your vehicle for long distances in hot weather. 

Lucas Oil 10684 20W-50 has around 2100 ppm of zinc, making it excellent for maintaining oil pressure in your old engine oil. Lucas zinc oil contains a friction modifier, which helps to prevent wear and tear in your ancient engine. Because of the friction modifier, the oil sticks to the metal parts, providing improved lubrication. 


  1. It helps to improve the low oil pressure in your engine. 
  2. Avoid overheating by providing adequate cooling and avoiding friction. 

Viscosities: 10W-30, 10W-40, 20W-50, SAE-30 

Royal Purple

Another brand that contains excellent quality zinc oil. Royal Purple produces one of the fully formulated traditional oils, which means it contains no external additions. 

Royal Purple 11487 Engine Break-In Oil was created specifically for old engines to improve lubrication and temperature control. The zinc and phosphorus in Royal high zinc motor oil are beneficial in combating sludge development and friction. 


  1. There are no additional additives in the 10W-30 viscosity grade. 
  2. Ideally suited to high performance or flat tappet camshafts. 

Viscosities- SAE 10W-40, 10W30,20W-50,5W-30 

Triax Synergy 

TRIAX Synergy is a well-known high zinc motor oil. It has a zinc content of roughly 2000 ppm in their motor oil. The zinc content is 25% higher than in other engine oils, making it an excellent choice for older engines. 

Triax Synergy Extreme 5W high zinc oils are thought to be a little pricey, and the packaging is not as good as that of its competitors.

However, the quality of the oil is worth the price, with enough zinc compounds to provide full protection. 


  1. It contains a high level of Organo Molybdenum to provide maximum resistance to wear and tear. 
  2. It is recommended for vehicles with high RPM and horsepower. 

Viscosities: 5W-50,10W-40,10W-60 


Castrol is a trusted brand in the engine oil industry. CASTROL GTX CLASSIC is a high zinc motor oil specifically intended for vintage classic collector cars, muscle cars, and race cars that demand extra protection and lubrication. 

CASTROL GTX CLASSIC provides adequate protection from wear-tear and sludge if your engine horsepower increases. This oil is not available in different grades. They provide an oil viscosity of 20W-50. It is typically not advised for new automobiles equipped with catalytic converters or a wet clutch. 


  1. Additives with a high zinc and phosphorus content. 
  2. Have thermal degradation for improved performance at high temperatures. 

Viscosities: 20W-50

AMSOIL Break-In Oil

AMSOIL is another well-known brand of high zinc motor oil. They have a high concentration of ZDDP elements, which give adequate protection in high temperatures. It is also ASTM D1748-10 approved, which means it meets industry standards in protection against wear-tear.

AMSOIL Z-ROD has a zinc content of 1,400 ppm and a phosphorus content of 1,300 ppm. It is compatible with conventional and synthetic motor oils; however, mixing the oil is not suggested because it can reduce the performance of the zinc additives. This motor zinc oil is typically recommended for up to 5000 miles of rides.


  1. Improved protection in Flat-Tappet Cams.
  2. Complete wear and tear protection in older engines.

Viscosities: SAE 20W-50,10W-40,10W-30

Brad Penn

PennGrade, which started in 1965 with the Kendall GT-1 under WITCO Corp and was later sold to ARG, has become increasingly popular among race vehicles. This brand has been trusted for over 50 years with various products. Their high zinc motor oil is appropriate for vintage engines and high-performance racing vehicles.

For best engine protection against wear and tear, PENNGRADE 1 BREAK-IN OIL with SAE-30 and Brad Penn Oil PK Partial Synthetic Racing Oil with 20W-50 are their bestsellers and most trusted products.


  1. A layer of high-strength film provides adequate wear-and-tear protection.
  2. It contains no asphaltic components, making it a better choice in high temperatures.

Viscosities: 10W-30,5W-30,10W-40,15W-40,20W-50 

FAQ’s on High Zinc Motor Oil Brands

You should consider high zinc motor oil based on your performance requirements, vehicle viscosity, and budget. You should also consider extra additives and oil compatibility with your engine.

If you have a v6 or v8 engine built before 1988, you will certainly want high zinc motor oil. This is because flat tappets designed camshafts were common in cars manufactured around 1980. The addition of zinc to your flat tappet camshaft allows the tappets to get the best out of cam lobes, resulting in critical initial firing and break-in inside racing and muscle cars. Zinc additives also increase the life of cam lobes.

It is recommended that you get high zinc motor oil directly from the market because the oil has a fixed ratio of zinc and phosphorus. Adding more ZDDP additives to your oil might be dangerous because it can cause acid formation in the oil, which can lead to the abrasive wearing of engine components. The amount of zinc in your oil depends entirely on your oil brand and your engine configurations. However, zinc concentrations ranging from 1000 ppm to 1400 ppm are more than adequate for old engines.


To summarize, if you want your old engine to run in this era, it needs extra care and protection. High-zinc motor oil is always suggested for older engines or high-performance race vehicles. Always get advice from your mechanic on using high zinc motor oil in your engine. Make sure to buy the oil based on the configuration of your car, keeping in mind your viscosity requirements and budget. 

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