Started with a well broken in, flat tappet cam engine around 10,000 miles and used it till over 120,000 mi. 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 engine. If there is a difference, the resultant effect will most likely cause the engine to malfunction. happen. At best, the engine oil will cease to perform and acquire the shape of solid sludge. As a result, the car engine’s RPM will be

converters vs synthetic engine oil. For now, you should bear in mind that if you are planning to use Valvoline VR1 racing oil, make sure Formulated to increase vehicular gas mileage while reducing engine wear and tear at extreme temperaturesI had similar concerns about the current SM oils being sold so I inquired to the API tech line and this is what I found. Valvoline stands behind the flat-tappet and more aggressive type cam applications 100% with our Valvoline VR1 and NSL Racing oils. The proof is in our product information sheets, which are online for the viewing as well. 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."

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.

Features

Valvoline's High Mileage 150k+ is our first motor oil specially formulated for engines over 150,000 miles. Like any other product, there are other competing oils for your racing car in the market. Its major contender is none other than an oil from its own range of racing lubricants, the Valvoline 10W-30 VR1 racing motor oil. 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. Synthetic motor oils are inherently more stable and less prone to thermal breakdown vs. conventional oils.

Since race car engines have extremely high RPM, the oil requires additional lubrication, perfect viscosity and just the right amount of anti-wear additives for maximum performance. In that realm, Valvoline Co. managed to get the percentages right – and that is exactly why this oil is the number one preferred brand among race car owners from all over the world. Think of using a sloppy quality synthetic engine oil during extreme winter conditions. The oil gets solid and it prevents the engine from turning over smoothly. That’s what happens when Valvoline VR1 is used for regular non-racing cars. It would be better to admit that this oil was made for racing cars, and other street-legal racing vehicles, such as Mustang, Camaro 406 and vice versa. Valvoline offers a full range of specialty engine lubricants and cleaners to help keep your engine at peak performance. So, let’s see how you can ensure that your racecar stays in top-notch condition throughout the season.The oil is specially formulated to control any friction in the engine when in use and the process improves the engine performance even in extreme service conditions. This is why the oil is today one of the reigning leaders in lubricants used for any type of racing including drag racing and dirt and paved ovals. Low viscosity 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. and that too if the car is used for actual racing. Otherwise, the catalytic converters are still going to get damaged if the car is