Jump to content

If you receive an influx of emails from the forum, please disregard as they are cached.  Our email provider changed server settings without notifying us.  The new settings have been applied so normal mailings should resume, per system settings and user preferences.  This includes new account signup validation emails. - Updated: 06/11/2022 2:48PM PST

_______________________________________________________

Due to a hardware failure on the hosts systems, all posts and messages created between May 26th and Jan 13th have been lost. Additionally, if you joined the NPORA Forums community during that time, you'll need to re-register. -NPORA Mod Team *Updated: 05/19/2022 12:15AM PST

Octane...what type of fuel are you guys running?


Recommended Posts

I am finally closing in on the final details of getting my new to me 1988 Pathfinder ready for a State Vehicle Inspection. Thank God and the folks are NPORA for helping out.

 

That said I am curious what octane fuel most of you are running? Is Regular (87) ok? are there any benefits to going with mid-grade or premium?

 

My German cars hate REG/Mid and only run on Premium. I was kind of hoping the Pathfinder would be A-Ok with Reg.

 

Thanks in advance!

 

Andrew

Link to comment
Share on other sites

87 grade here, normally. I consider 'some' of the fuel I use 85 jokengly... But 87 is plenty fine. I personally belive higher grades at least in my truck only benefit making my wallet easier to carry since it weighs less afterwards.

  • Like 1
Link to comment
Share on other sites

If the vehicle is specified to run on regular (87 octane) fuel, using any higher octane will not result any benefit (the engine can't advance timing any further) and may even cause some issues as the higher octanes are harder to burn. It'll only waste money.

Link to comment
Share on other sites

If the vehicle is specified to run on regular (87 octane) fuel, using any higher octane will not result any benefit (the engine can't advance timing any further) and may even cause some issues as the higher octanes are harder to burn. It'll only waste money.

 

 

87 it is! Thank you both! Perfect! Next stop this afternoon to pay the shop and retreive the Pathfinder. Fingers crossed it will pass MASS State Vehicle Inspection and I will be good to go!

Link to comment
Share on other sites

  • 4 weeks later...

I always use 89. Only because the shell station I usually go to says "no ethanol" on the middle grade and premium choices.

 

 

Nice.... no ethanol....nice wish we could find some around here. Everyhwere has it now, probably because this is a big city.

Edited by Alkorahil
Link to comment
Share on other sites

I always use 89. Only because the shell station I usually go to says "no ethanol" on the middle grade and premium choices.

 

You will not see that no ethanol much longer, Most states now require 5-10 percent ethanol, and it is looking like it will soon be a federal requirement. I am against this stuff makes no sence that they are adding a chemical that makes gas less efficient and causes more ware on engines. It is a big joke.

Link to comment
Share on other sites

Depends on weather you have fuel injection or carb... If you want to run high grade fuel you will have to change your spark timing and carby settings to take advantage of the increased octane... With EFI the computer should make the changes for you inside it's preset rates, providing all the sensors are in working order (nok, O2, map/ air speed, air temp, etc). If they are not, then the computer will revert to a factory preset... After that you will need your computer remapped...

I myself have tuned my Z24 carb and spark for 98 octane... The advantages of higher rate fuels are cleaner burn and more bang for your buck... I do getting better mileage from the better fuel and if tuned correctly your emissions should be either the same or lower...

Remember I am in Australia and we pay more for fuel ( about $1.60 per liter aus, $1.71 for 0.264 gallon u.s.)

Link to comment
Share on other sites

You will not see that no ethanol much longer, Most states now require 5-10 percent ethanol, and it is looking like it will soon be a federal requirement. I am against this stuff makes no sence that they are adding a chemical that makes gas less efficient and causes more ware on engines. It is a big joke.

 

 

I have to agree 100%

 

I also have thought many times...seems there is a correlation between when they started seriously adding ethanol in all gas and the increase in vehicles failing emissions test because of catalytic converters failing.

The number that are replaced are significantly higher than say about 10 years ago when the push started. Ask any parts guy who has been around for awhile.

Or maybe they just dont make them like they used to....

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

Welcome to NPORA Forums

 

Please register to gain full access to the forum.

Make sure you read the Forum Guidelines and don't forget to post a new intro in the New People Start Here! section, to say hi too everyone.

 

-NPORA

×
×
  • Create New...