Moderator: volvite
FWIW, I see no measurable difference in mpg between 87 and 89 (or 93 even). Certainly not 3mpg. I really don't see a performance difference between 89 and 93 either but do between 87 and 89. So I go with 89. The books calls for 91 for maximum performance but they don't sell that here. I'm averaging 18-19mpg on my normal commute and 21mpg on long highway trips. I used to get 22-23mpg on highway trips but since installing new tires (same size....) it has dropped.netslacker wrote:Thanks for all the feedback.
I think my plan is to use premium for a while and see how that goes then try reg. Since gas is so expensive I'd like to see if using premium gives me a little jump in mpg where the extra expense makes it worth while. I figure if I can get ~3mpg more (or 20% better fuel economy based on 15mpg mixed use) but the extra expense is only a 6% cost gain then that'll be worth it.
Hmm.. I had found another gas thread similar to this one where a few people had reported a mileage gain using premium. If it's truly not the case then yeah, no need to spend the extra.skinny2 wrote:FWIW, I see no measurable difference in mpg between 87 and 89 (or 93 even). Certainly not 3mpg. I really don't see a performance difference between 89 and 93 either but do between 87 and 89. So I go with 89. The books calls for 91 for maximum performance but they don't sell that here. I'm averaging 18-19mpg on my normal commute and 21mpg on long highway trips. I used to get 22-23mpg on highway trips but since installing new tires (same size....) it has dropped.
Hi buddynetslacker wrote:We just got our 2010 pathfinder and I'm curious to know what gas people are using. Inside the gas door it says "Premium gas is recommended for best performance" (or something like that) but it didn't say that premium was required. So I'm curious, what gas do people get the best mileage out of premium or regular?
Any harm in just using straight 87 octane? or should I keep it at premium (93 octace)?
Cheers!