Not to thread jack but just saw your Camaro in your sig. Congrats Chibi its beautiful!! On the subject I'm running high mileage non synthetic Valvoline in my Monte. It doesn't get driven much so I can't justify the price of synthetic in it. The truck gets Castrol GTX High mileage part syn (which I hear is basically pointless syn) anyway it runs great and I started running that at 70k with no issues. I have no clue what I'll run in the stealth when its due prior owner always took it to a Dodge Dealer 30 miles from me it has a mopar sticker and when its due for the next change so I'm assuming its using mopar oil? Any suggestions what to run?

 

i switched over to full castrol synthetic when i did my oil change (89k) i had a leak that was only to find out that i had no oil pan gasket, i got that fixed and still using synthetic and no more leaks and it feels much smother that what it was before i switched over, you wont be disappointed.