This is what we run in lots of different cars, I even had an engineers from one of the companies that has been listed say just to use that if I was going to change at regular intervals and not a full time race application.
Any of my "old" cars that have flat tappet camshafts get the Valvoline VR 20/50 oil. This still has all of the additives needed for the older engines. Lighter weight oils just seem to thin out too much around here in the summer and we drive our stuff pretty hard. I used Rotella-T for a while but got away from it because of all of the heavy detergents for the diesel fuel usage and excessive oil consumption. Since going back to the Valvoline the Chevelle uses no oil at all.
I have been using Pennzoil 5/30 in any of my LS powered cars for quite a few years with no problems.
Also, big fan of the Lucas engine oil stabilizer. My C-5 had about 20,000 miles on it and started to puff a little smoke when taking off from a stop.
It used a little oil, but not bad. Since using the Lucas product no smoke and doesn't use a drop. I did this in my '04 GMC 2500 that has 90,000 miles on it with the 8.1 gas engine. This thing used a quart of oil every 1,000 miles since new. The dealer said that this was within the factory spec. After using the Lucas product it uses maybe a quart every 2,500 miles and that includes some heavy towing. Told a friend about this last year and made a believer out of him as well. His '02 Corvette used a quart about every 2,500 miles. He drove to California and back, almost 6,000 miles and it never used a drop.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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