snoman--instead of knocking me (no pun intended), why don't you argue your case against all those manufacturers who state in the owners manual (gee, I think I emphasized this point a gazillion times) that 87 octane gas can be safely used. I mean, with the manner in which you are replying to my posts/comments...it almost seems like you're insinuating that
I'm the one who's misinforming the masses about why 87 octane shouldn't be used in modern engines. Well guess what? I never said that 87 shouldn't/can't be used in modern engines; what I said (or meant to say) was that, if the owners manual stated that 87 can be safely used, then the manufacturer must either be right or doesn't have a clue as to what octane is really required.
The owners manual for my '03 Yukon XL says I can use 87 octane; your posts seem to imply that this is not correct, yet it seems that you find it easier to criticize me for not using higher octane in my truck rather than lay blame for this "misinformation" where it should really go to--namely, the manufacturer.
You keep pushing the "higher octane is better" mantra--if I didn't know any better, I'd almost say that you're doing so 'cuz you must have some vested interest in the oil companies.:kidding:
Oh yeah--I've been running 87 in my YXL--with its "modern" engine--for almost 2 years...and I'm not getting any knocking/pinging at all, even during the hot summer months here in Sacramento where the daytime temps regularly reach 90 deg. F or higher.
An extra 5 to 10 cents? I dunno about where you live, but here in CA, it's at least a 10 cent difference between 87 and 89, and another 10 cents between 89 and 91...so between 87 and 91 you're looking at a 20 cent--if not more--difference. 5 cents? I've yet to see any gas station here in CA with a 5 cent difference between octane grades...maybe where you live in OH, but not over here...
