I'll listen to Patrick's advice,THANK-YOU!! They HIGHLY RECOMMEND ZDD additive,and HARDENED valve seats. I've done both,and continue to use ZDD and Valvoline VR racing 5W50,on EVERY oil change,and my engine is HAPPY HAPPy HAPPY!! Has been for the last 5-years!! And,NO,I'm not being "pithy",whatever that means.I change the oil myself,and doesn't cost more than $50.00.You're getting RIPPED!!
Last edited by wetwilly5757; 07/26/2013 1:07 AM.
