Quote:
Originally Posted by Cristian135
What oil is the ideal for a stage 2? 5-40?
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There's a whole thread about this, and this is off topic. Consensus seems to be that if you're in a hot environment (e.g Arizona, SoCal etc.) Then LL01 5w40 might be best, or a thick 0w30 like Redline. In colder climates, maybe 0w30 in the winter. Check out the dedicated thread though for more info.
Pretty unlikely that the wrong oil would cause a piston fracture though. Far more likely to be super knock.