Quote:
Originally Posted by Obioban
S54 rod bearings can have a hugely variable life span, depending how the car is driven. If you don't go over 7500rpm, they will outlast the engine. If you're on track and bump your rev limiter to, say, 8600rpm (and use it), you'll be replacing them ever 20,000 miles.
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I think proper warmup is a crucial element to S54 rod bearing lifespan as well. Don't jump on it until the oil temperature comes up.