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Racing oils have superior engine-cleaning abilities and can even boost performance. However, they are not designed for extended use between oil changes.
In a video on The Motor Oil Geek YouTube channel, expert Lake Speed Jr. explains why you should use the recommended oil for your engine, even if there are ‘better’ options available.
By comparing engine wear with three different oils, Speed Jr. demonstrates that while racing oils like Valvoline VR-1 may possess equal or superior technical attributes to OEM oils, they are not suitable for the same extended duration.
Valvoline VR-1, a high-performance racing oil
This is because modern synthetic oils contain a certain amount of antioxidants, or high-temperature stabilizers, that prevent the oil from degrading over time or with use. Street oils tend to have more of these additives, allowing for extended oil change intervals of up to 10,000 or even 15,000 miles. In contrast, racing oils have very few or none of these additives, resulting in a shorter oil life, as Speed Jr. explains.
This isn’t an issue for race cars, as oil is typically changed after each run or very frequently. But if you use racing oil in your daily driver and don’t change it for 10,000 miles, your engine could experience more wear, despite the higher-quality oil.
Modern synthetic oils contain antioxidants to prevent degradation over time or with use.
Speed Jr. likens racing oil to racing tires: softer tires provide better grip but wear out much faster than harder street tires.
So, before investing in expensive specialty racing oils, consider your actual usage. Doing so could save you significant repair costs down the road.