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LandonL · 11-23-2010, 10:31 PM

Castrol Syntec 20w-50 for classic cars that have a flat-tappet camshaft. It's what I put in my 250L6. Supposedly has plenty of zinc for the cam.

11-23-2010, 10:31 PM	#7
LandonL Registered User Join Date: Nov 2009 Location: Georgia Posts: 440	Re: Oil change time! Castrol Syntec 20w-50 for classic cars that have a flat-tappet camshaft. It's what I put in my 250L6. Supposedly has plenty of zinc for the cam. __________________ ---\| 1967 GMC Stepside \|-- 250 L6 .030 over ---\| 1985 Porsche 944/1 \|--- Build Thread: '67 GMC http://67-72chevytrucks.com/vboard/s...d.php?t=378640 Last edited by LandonL; 11-23-2010 at 10:32 PM.