Re: My 86 442: update 5-5-10
Its a flat tappet cam engine. Government made the oil companys take the zinc or ZDDP package out of our oils that the flat tappet cam engines required as lubrication. Well worn engines with weak stock springs usually live for a good while with the newer oils but something fresh with good springs and a performance oriented cam will get its life cut short without it. You can either buy a ZDDP additive for any oil or use Valvoline VR1 racing oil. It was excluded because its always been marketed as a racing oil. You can get it in a 10/30 but you may need to ask someplaces to order it for you if you want it in 10/30. Most places carry it in 20/50 which is fine in the summer. Oil filters I prefer WIX.
Its a flat tappet cam engine. Government made the oil companys take the zinc or ZDDP package out of our oils that the flat tappet cam engines required as lubrication. Well worn engines with weak stock springs usually live for a good while with the newer oils but something fresh with good springs and a performance oriented cam will get its life cut short without it. You can either buy a ZDDP additive for any oil or use Valvoline VR1 racing oil. It was excluded because its always been marketed as a racing oil. You can get it in a 10/30 but you may need to ask someplaces to order it for you if you want it in 10/30. Most places carry it in 20/50 which is fine in the summer. Oil filters I prefer WIX.
