LS1 a gas eater?
05-15-2006, 12:08 AM
#41
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when i got 'er i was gettin 18.5 mpg, which rose slightly. the drive has not changed, 70% is the commute down backroads, 30% mixed city. Since the oil change to 10w-30 mobil 1 from whatever the dealer used, and possibly better weather, i'm getting 21.8 consistently.
05-15-2006, 06:58 PM
#45
11 Second Club
Originally Posted by Sgt. Spuds
two tanks ago, 12.2mpg
last tank, 11.6mpg
50/50
last tank, 11.6mpg
50/50
Put serious modifications on it, drive it around town, and that's what happens.
05-15-2006, 07:27 PM
#47
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yea but I have a six speed I should be getting way better than that. That was using a 10% Ethonal mix, and I drive mario andrette... I tried straight citgo 93oct, and its been raining a LOT so I have been driving VERY reasonable, and I have 50 miles on the tank now and the needle is 1/8th down from F, usually I get about 60miles on teh first 1/4 of the gauge, so Im doing better... lol I also ran some fuel injector cleaner through it... IDK why I have such shitty mileage on a basicly stock car.. 
05-15-2006, 07:31 PM
#48
Tech Resident
what's the best oil to use in order to get the best gas mileage? synthetic? 10w-30? 5w-30?
my first fullup got me 21mpg. i'm happy with that but if i can get it better...it's got the oil from the dealership. looks new but it's probably real oil, not synthetic. what should i use? mobile 1? castrol syntax? who has the BEST RESULTS?
mind you i just bought the car and i have no clue what they've been running, normal or synthetic. i dunno how bad it would be to go synthetic if normal has always been run in it? it has 25k miles.
my first fullup got me 21mpg. i'm happy with that but if i can get it better...it's got the oil from the dealership. looks new but it's probably real oil, not synthetic. what should i use? mobile 1? castrol syntax? who has the BEST RESULTS?
mind you i just bought the car and i have no clue what they've been running, normal or synthetic. i dunno how bad it would be to go synthetic if normal has always been run in it? it has 25k miles.
05-15-2006, 07:34 PM
#49
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I do some long trips in mine...M6--about 25 mpg all told...average....no cam or other engine mods....just bolt-ons.......I do not use very light oil..I use 10-w30 all the time......also have let my car warm up 5-10 minutes ALL its life....b4 I drive away....a warm lubricated engine is happy... 
OH YEAH..sometimes 91 octane...which is probably 94-96 octane down there.... 
[everytime I drive stateside my car is glad to be home where the gas is gas..]
OH YEAH..sometimes 91 octane...which is probably 94-96 octane down there.... [everytime I drive stateside my car is glad to be home where the gas is gas..] Last edited by NHRAMAN; 05-15-2006 at 07:56 PM.
05-15-2006, 07:38 PM
#50
Originally Posted by ChocoTaco369
what's the best oil to use in order to get the best gas mileage? synthetic? 10w-30? 5w-30?
my first fullup got me 21mpg. i'm happy with that but if i can get it better...it's got the oil from the dealership. looks new but it's probably real oil, not synthetic. what should i use? mobile 1? castrol syntax? who has the BEST RESULTS?
mind you i just bought the car and i have no clue what they've been running, normal or synthetic. i dunno how bad it would be to go synthetic if normal has always been run in it? it has 25k miles.
my first fullup got me 21mpg. i'm happy with that but if i can get it better...it's got the oil from the dealership. looks new but it's probably real oil, not synthetic. what should i use? mobile 1? castrol syntax? who has the BEST RESULTS?
mind you i just bought the car and i have no clue what they've been running, normal or synthetic. i dunno how bad it would be to go synthetic if normal has always been run in it? it has 25k miles.
SOMETHING IS WRONG.... 
05-15-2006, 09:49 PM
#55
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Originally Posted by ChocoTaco369
0w-30? what do you do, **** in the crank case?
It's actually thicker than other 0-30's. This topic has been beat to death. It's great oil.
I'm happy.
05-16-2006, 10:25 PM
#57
Tech Resident
i dunno guys...0w-30...i'm reading about it on mobile's website. says it exceeds fuel economy standards. doesn't that offer REALLY BAD protection to vital engine parts though? i mean, i thought even 5w-30 was a little watery and 10w-30 is optimal for engine protection. i think 0w-30 would be like putting water in your crankcase? i mean, viscosity-wise.
05-16-2006, 10:35 PM
#58
11 Second Club
Originally Posted by ChocoTaco369
i dunno guys...0w-30...i'm reading about it on mobile's website. says it exceeds fuel economy standards. doesn't that offer REALLY BAD protection to vital engine parts though? i mean, i thought even 5w-30 was a little watery and 10w-30 is optimal for engine protection. i think 0w-30 would be like putting water in your crankcase? i mean, viscosity-wise.
I use Mobil 1 0w40 synthetic.
05-17-2006, 12:02 PM
#59
Originally Posted by ChocoTaco369
i dunno guys...0w-30...i'm reading about it on mobile's website. says it exceeds fuel economy standards. doesn't that offer REALLY BAD protection to vital engine parts though? i mean, i thought even 5w-30 was a little watery and 10w-30 is optimal for engine protection. i think 0w-30 would be like putting water in your crankcase? i mean, viscosity-wise.
Mobil 1 != German Castrol
I believe the GC 0W-30 is actually thicker than M1's 5W-30 from what I remember.
05-18-2006, 10:28 AM
#60
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I get great mileage on the highway, about 200 miles on half a tank
on the city however, thats a different story (I got a heavy foot
) usually about 15-18 mpg on average 
on the city however, thats a different story (I got a heavy foot
) usually about 15-18 mpg on average