Originally Posted by Luke
From what I've read it breaks down much faster. I am by no means an oil guru, I have been trying to read up on different oils from different sources to gain some unbiased knowledge on it. So far I've found that for daily duty on a typical car all oils will protect as they should, but when it comes to racing and really putting strain on the parts a better oil will protect better and longer. For those that plan on getting rid of their cars before 100k I'm sure there isn't much personal benefit. I plan on running the dog shit out of mine and eventually when the time comes that I get a built motor, this one will hopefully be put into a foxbody and continue to run efficiently as it should.
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Most oils when broke dwn get thicker. This is what kills a motor. 10PSI PER 1000RPM is a gd rule of thumb. When racing Id change oil every 1-2k miles or when your done as the street oil will lubricate better then the race oil on the daily trips.