Originally Posted By: HTSS_TR
Free after rebate Peak 10w-30 in '94 LS400 with 240k miles bought couple months ago, engine runs as smooth as any brand name conventional oil. The oil change interval for this old car is 6 months or 6-8k miles with conventional oil, oil filter is changed only on second oil change. The car consumes about 1/2 quarts every 3-4k miles.
6 months/6000 miles on conventional, with filter changed every other cycle really seems smart. Manufacturers recommend it for a reason. Most filters can handle that interval. Free after rebate does rock.
I just got a couple of great synth deals recently. Had I not I believe I'd just go with YB, WB, MC. Or whatever is Free after rebate like the Peak.
For those of us with regular cars, doing regular driving, it can't be beat.
I will say that as long as one is comfortable, going the 1 year and 12,000 miles with Mobil 1 EP might be just as good. A one year OCI could be cool. At $30 with a Mobil 1 filter it's only $30 more than free. Which is worth the convenience to some. Of course I am still getting up the guts to do a 6 month change.