High miles on LS1 motor is it worth switching to synethic
07-26-2005, 12:54 AM
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High miles on LS1 motor is it worth switching to synethic I have a 98 LS1 with mods and 100 shot of nos. Im running 5w-30 castrol is it now is it worth going to 5w40 synthetic with 94,000 on the motor. thanks
