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#17 |
Member
Join Date: Nov 2007
Location: Ontario Canada
Posts: 411
Likes: 1
Liked 19 Times in 7 Posts
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Ive been running Valvoline 20W50 "Not for Street Use" with a bottle of AC Delco Engine Oil Supplement right from the GM dealer with no trouble as of yet. I have also run 10W30 Not For Street Use but it makes my oil pressure light flicker when its hot. I was told that this oil still has zinc in it and is specialy made for flat tappet camshafts. And I broke it in on Rotella T 10W40 as per Comp Cams. And I always thought Rotella T was for the lawnmower and rototiller.
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Tony Valerio 1968 Camaro 1700 IHRA H/CM 1701 NHRA SS/?A |
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