In case you acted on the impulse and got carried away by the race engine oil hype, perhaps your mistake can be redeemed. It depends on how long you’ve had the oil left in there vs the current performance stats of your car’s engine. It seems that's where some of the confusion has come from, where API SM called for reduced zinc/phos, BUT then doesn't apply to certain types, even those that don't have the "starburst seal", but would still say SM rated, but with only the API doughnut symbol, etc. Geez, who's on first? Gets rather involved doesn't it? Synthetic motor oils are inherently more stable and less prone to thermal breakdown vs. conventional oils. So, let’s see how you can ensure that your racecar stays in top-notch condition throughout the season. Valvoline VR1 Racing is a 20w-50 mineral engine oil that’s formulated to deliver maximum engine performance in both turbocharged and non-turbo petrol engines. The unique chemistry of Valvoline’s VR1 Racing oil reduces harmful friction in the engine and enhances engine power, perfect for drivers seeking race-level performance that doesn’t compromise on protection. Although it’s one of the most popular engine oils for racing, Valvoline VR1 is also 100% compatible with passenger cars that take 20W-50 lubricant.

It would appear that a few things are getting cleared up, and that we are learning something, so that's good. With all the talk lately about roller lifters and oils...as well as flat tappet cam failure....I found this testing by Valvoline to be pretty interesting too. Alternatively, if you own a street-legal variant of a racing car, then go for the gray-colored bottle of Valvoline VR1 engine oil. This product description on this bottle mentions that the oil can be used on street-legal sports/ race cars for up to 3,000 Miles between average oil change intervals. The oil also helps increase your vehicle gas mileage while reducing unnecessary engine wear at extremely high and low temperatures. However, as synthetic oil is derived through a complicated production method, the oil costs more than conventional motor oils. Tailored for gasoline and full or partial alcohol fuels While the extra layer of Zinc and Phosphorous shield the engine against metal-on-metal damages, the oil also damages the catalytic

Pressed For Time – Check Availability Here

I am waiting for a shipment of AmsOil to arrive for my HD and vette. My engine is not raced and has hydraulic lifters so not a race engine. I am only concerned with high temps that is a problem over here. Does anyone have experience with AmsOil ??S.Florida so temps are pretty high daily. Formulated to increase vehicular gas mileage while reducing engine wear and tear at extreme temperatures

There was a time when 75,000 miles meant that a car was about three-quarters of the way to the junkyard, but 200,000 is the new 100,000 miles for cars. As the Valvoline VR-1 is synthetic, no crude oil was used in its making. Like most synthetic oils, the oil gives much better mechanical performance than traditional motor oils made from crude oil. If it is racing oil you are looking for your high-performance racing car; then the Valvoline 20W-50 motor oil is oil worth trying out. It is affordably priced in a set of 6 lightweight one-quart bottles.This label means that the oil is specifically meant for race car engines. On that note, one single refill will last you about 450 – 500 miles The latest API SM standard for car oils calls for a zinc and phosphorus content less than 0.08% to reduce sulfur, carbon monoxide, and hydrocarbon emissions (this contradicts what the Valvoline guy said about SM having nothing to do with zinc/phos).As a result of this mandate, some motor oils now have as little as 0.05% zinc and phosphorus and many of the motor oils we tested did not have the levels as found in, for example, Mobil 1. However, it is worth noting that these new API guidelines do not apply to “racing,” “severe duty,” or any motor oils that do not carry an API “starburst” seal or clearly state for off-road-use only. Motor oils meeting “Energy Conserving I or II” standards should be avoided." Started with a well broken in, flat tappet cam engine around 10,000 miles and used it till over 120,000 mi.