Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: What oil to use
I have seen cases of guys going to a oil with lots of detergents into older model cars. I saw where someone had a very old , 1950's Olds that got the bright idea of changing oil and picking up a good quality oil like Pennzoil ,with all those Z7 detergents. Soon after the change, those detergents went to work, removing all the gunk in an old car, thus oil pressure dropped to something like 5 psi at hot idle.
That motor had to be pulled.
Later after the oil change, an older person indicated that the hi detergent oil cleaned everything up, and caused excessive bottom end clearances. A better choice of oil would have been a lawn mower type oil, that did not have all the additives to keep the motor clean.
Probably even better would be to us new clean oil that has been re-refined. Yes, its out there.
Remember guys, I am talking about something that was done before some of you younger guys were ever born.
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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