924doorEG

is it safe/ okay to run chevron plus in my d15b7 slightly modded? i think its 89octane?

posHonda

i dont see why not but you can get cheaper gas for it so i dont see why youre trying to waste your money.

Winlight

i would run 91

posHonda

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Winlight &raquo;</TD></TR><TR><TD CLASS="quote">i would run 91</TD></TR></TABLE>

in a lightly modded d15b7? thered be absolutely no reason to. it wouldnt do any good and will just waste your money.

924doorEG

are you serious 91? someone told me running 89 would mess my motor up

95ProjectEJ1

iTrader: (5)

Is the compression that high to run 91? Is it 9:2:1 ?

posHonda

its not going to mess up anything but it would be a waste of money.

924doorEG

damn im tryin to get an honest awnser lol, my car isnt realy modded but will it hurt my motor running 89? plus?, because i can tell the difference when running 87 and 89 my car runs better with plus.

95ProjectEJ1

iTrader: (5)

I dont know the compression cut off for each octane, but I do know when I had my B18c w/ 11:1 compression I had to run 91 no matter what. At 9:2:1 on your D15b7 you should be fine at 87 octane.

Winlight

i didnt relize the compretion was that low,i would just run 87 with it.pump gas isnt going to hurt anything so run what makes you feel good.i have higher compretion thats why i run 91

posHonda

it might just be in your head that it runs better with 89 instead of 87. and it IS an honest answer. i just dont see why anyone would waste money on higher octane has when theres no benefits and it just makes your wallet thinner.

fmrprojects

just use 87.

95ProjectEJ1

iTrader: (5)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iVteC_PoWeR &raquo;</TD></TR><TR><TD CLASS="quote">it might just be in your head that it runs better with 89 instead of 87. and it IS an honest answer. i just dont see why anyone would waste money on higher octane has when theres no benefits and it just makes your wallet thinner.</TD></TR></TABLE>

Especially with how gas prices are. If you motor is unable to successfully burn all of the fuel mixture because your compression/heat is low then its pointless, just like iVtec said.

Jonathan_ED3

Run 87 octane. There is absolutely no reason to spend more money on the 89 or Premium.

That said....it is NOT a waste of money to spend the few cents extra on Chevron brand gas. As far as I know, the only Top Tier rated guys are Chevron, Texaco (I think?), and I know Shell is now Top Tier.

Have you seen the Chevron commercials comparing the valves of engines that run Top Tier gas vs. the discount crap? It's only slightly exaggerated. I'd rather spend the extra 25 cents more each fill up and know I'm buying quality and knowing I'm doing everything I can to keep the inside of my engine clean than shopping around for the best "deal". It's not THAT much more to buy from the Top Tier guys.

smileycvc

Running a higher octance in your motor will never hurt anything. Running a lower octane than your supposed to will always cause problems. I always run 91 because my compression is high. Now on a stock motor I would only run 87, just because like stated earlier its not really worth it to spend the extra on 91. But if you want to use 91 or 89 its not gonna hurt anything.