Regular or Synthetic Oil?

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#9 (permalink)

04-15-2009, 11:59 AM

zzmac

CC Member

Join Date: Oct 2007

Cobra Make, Engine: Superformance, Roush 402R

Posts: 303

Not Ranked

I actually have a small leak at the firewall end of both valve covers (that's where the dye shows up) which was going to be my next project after the oil change. I don't know the viscosity of what's in there now but maybe the 20/50 will save me some work.

The guy I spoke to at Roush said a 10W30 is fine if I don't drive the car hard. Would there be any negatives if I used the 20/50 if I don't drive the car hard or should I switch to the 20/50 and just start driving the car harder?

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