What type of gas should I use in my 944?
09-04-2018, 10:56 PM
#1
AutoX
Thread Starter
Join Date: Aug 2018
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
What type of gas should I use in my 944?
They say the dumbest question is the one not asked, so...
I just bought my 944 a couple weeks ago, and the tank is nearing empty. What type of gas should I use in it? 87 or 92 (US scale)?
I just bought my 944 a couple weeks ago, and the tank is nearing empty. What type of gas should I use in it? 87 or 92 (US scale)?
09-05-2018, 01:20 AM
#4
Rennlist Member
The highest octane, non-ethanol fuel you can find.
09-05-2018, 01:46 AM
#5
Burning Brakes
87 octane without ethanol should be correct. Higher octane will not hurt your engine or make it run better.
However, geographical areas vary. SoCal has a summer/winter blend where the octane remains constant but the performance and mileage delivered by the gasoline is affected due to volatility additives. I don't know what Florida does to their gasoline.
My recommendation would be to try different brands and and octanes. If you only fill up half a tank, if you don't like the gasoline performance you can fill the rest of the tank with one you know is good.
However, geographical areas vary. SoCal has a summer/winter blend where the octane remains constant but the performance and mileage delivered by the gasoline is affected due to volatility additives. I don't know what Florida does to their gasoline.
My recommendation would be to try different brands and and octanes. If you only fill up half a tank, if you don't like the gasoline performance you can fill the rest of the tank with one you know is good.
Trending Topics
09-11-2018, 11:46 AM
#9
Rainman
Rennlist Member
Rennlist Member
all fuel at regular pumps in the USA is unleaded...
for your 87 S you should use 91/93, whatever premium is in your area..
a 1982-1987 8-valve 944 only needs 87.
a 1988-1989 8-valve needs premium.
any 944 turbo and any 944S2/968 needs premium.
ethanol content does not matter as long as the car is driven semi-frequently.
for your 87 S you should use 91/93, whatever premium is in your area..
a 1982-1987 8-valve 944 only needs 87.
a 1988-1989 8-valve needs premium.
any 944 turbo and any 944S2/968 needs premium.
ethanol content does not matter as long as the car is driven semi-frequently.
09-11-2018, 01:27 PM
#10
AutoX
Thread Starter
Join Date: Aug 2018
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
all fuel at regular pumps in the USA is unleaded...
for your 87 S you should use 91/93, whatever premium is in your area..
a 1982-1987 8-valve 944 only needs 87.
a 1988-1989 8-valve needs premium.
any 944 turbo and any 944S2/968 needs premium.
ethanol content does not matter as long as the car is driven semi-frequently.
for your 87 S you should use 91/93, whatever premium is in your area..
a 1982-1987 8-valve 944 only needs 87.
a 1988-1989 8-valve needs premium.
any 944 turbo and any 944S2/968 needs premium.
ethanol content does not matter as long as the car is driven semi-frequently.
09-16-2018, 03:02 PM
#11
Instructor
In addition to octane, you should try to buy only "Top Tier" certified fuels in order to keep your engine parts and fuel injectors free of deposits. Top Tier fuel sellers certify that their fuels contain more than the EPA minimum clean engine additives and will keep your internals clean. Chevron was the first company to develop, test and use engine cleaners in their fuels back in the mid '80s when they developed the Techron additive. Many other companies bought and used it in their fuels as well. In fact, back in the 80's, the Porsche brand of fuel injector cleaner carried the Techron trademark on the back of the can. Anyway, look for the top tier label where you buy gas and it will be a good fuel for your engine.
Below is a little history of the EPA regs, the automakers requirements and the evolution of the top tier certification. Also includes a list of the brands that meet this standard.
https://en.wikipedia.org/wiki/Top_Ti...rgent_Gasoline
Below is a little history of the EPA regs, the automakers requirements and the evolution of the top tier certification. Also includes a list of the brands that meet this standard.
https://en.wikipedia.org/wiki/Top_Ti...rgent_Gasoline
11-10-2018, 09:48 PM
#12
I run whatever is cheapest in my 944na or S2 Porsches and they run fine. Once in a while I fill with 92 Octane because it just feels right like it will do some more magic somehow. But then the car drives exactly the same so then I go back to cheap stuff after the guilt of wasting money on the last fill sets in.
My old 924 would sort of vaporlock with any ethanol and would take a while to restar if I stopped at Target on way home and it sat for 20 mins or so. so on that one I stick to lowest ethanol blend I can find especially on hot Summer days. Either way they start and run the same to me.
My old 924 would sort of vaporlock with any ethanol and would take a while to restar if I stopped at Target on way home and it sat for 20 mins or so. so on that one I stick to lowest ethanol blend I can find especially on hot Summer days. Either way they start and run the same to me.
11-12-2018, 11:50 AM
#13
Rainman
Rennlist Member
Rennlist Member
^^ you really should run premium in your S2.
it's got nearly 11:1 compression, mild cams (meaning high cylinder pressure at lower RPM where knock happens) and the timing is made for high-test.
it will run ok on lower octane stuff but you're making the ECU dial back the timing and costing yourself power.
it's got nearly 11:1 compression, mild cams (meaning high cylinder pressure at lower RPM where knock happens) and the timing is made for high-test.
it will run ok on lower octane stuff but you're making the ECU dial back the timing and costing yourself power.
11-12-2018, 03:12 PM
#14
https://www.pure-gas.org/
corn fuel is bs. my cars are 10.5, 11 and 12.5 to 1 compression and engine efficiency (mpg) decreases proportionally to the ethanol content. if you add corn, you add water to keep it from being corrosive.
corn fuel is bs. my cars are 10.5, 11 and 12.5 to 1 compression and engine efficiency (mpg) decreases proportionally to the ethanol content. if you add corn, you add water to keep it from being corrosive.