Don't Use Cheap Gas
I use the recommended "89". In CT we generally have 87, 89, 91 and 93 available at the pump.
Guys, you're not saving that much money using the crap-gas.
For example, let's assume 15,000miles/year, and let's further assume the same mileage using 87 or 89 (15mpg), and how about guessing that the price difference is 5¢ per gallon, your "SAVINGS" is:
15,000miles ÷ 15mpg = 1000gallons * $0.05 (5cents) = $50.00 saved per year. B-F-D!!!
The "low-down" on engine compensating for gas -- it all depends on whether the system is detecting early detonation. If it is, then the computer can advance/retard spark as require depending on conditions and load. Relying on computer compensation for detonation is not wise. HEAVY knocking is what you hear...however, even slight knocking (that which you cannot hear but the computer can detect) over time can cause problems.
Basically, if your 87 or 89 grade is a few pennies different, then the $$ you save using "cheap" gas may not offset the potential damage that early detonation can cause. Engine repair will certainly cost more !!!
"Top Banana" #0102 of 4000
Last edited by TopBanana_102; 05-31-2006 at 09:51 PM.
Reason: missing verbs