Northstar Engines and System Technical Discussion Discussion, Synthetic Blend? in Cadillac Engine Technical Discussion; I've read previous posts saying that synthetics are not necessesary or reccomended in a North*. I was curious what the ...
How would you know? You would have to run two engines for the same amount of miles under hard conditions, disassemble them and compare them. If there was no benifit to synthetic oils, Cadillac wouldn't recommend it for the CTS-V or Chevrolet for the Corvette. I agree it's not necessary, but I don't agree that there's no benefit.
The question was asked for a '96 vintage Northstar. I'll go with the factory fill and recommended 10W-30 dino oil counting on the fact that the high dollar GM powertrain engineering staff did the pounding and measuring.
OK, so BBob said if your going to use synthetic, use Mobil 1. He did not say you won't see any benefit, only that it wasn't necessary. Hey,if you want to drink scotch, Johnny Walker Blue Label isn't necessary, but it sure taste's better then rack scotch.
It was in an issue of Hot Rod magazine a whlie back. Mobile 1 Synthetic oil improved 1/4 times slightly. Is it worth it on a daily driver? Not.
Another opinion heard from. and that's just what it is, an opinion. Whether it's worth it or not depends on driving conditions and if your willing to get off your wallet. How about this, if you won a contest at Walmart, and the prize was a lifetime supply of oil. Your choice was any dino 10/30 or Mobil 1 10/30, what would you choose? Oh, and if Mobil 1 improved 1/4 mile times that's because it reduced friction in the engine. Is that worth it on ANY engine, daily driver or weekend racer?? Yes