Fuel changes

Asked by Oct 29, 2015 at 09:20 PM about the 2004 Subaru Impreza 2.5 TS Wagon

Question type: General

I own a non turbo 2004 Subaru Impreza gx
and wanted to know if I can go from running
it on ulp91 to ulp95 I just don't want to
cause damage to the cars engine

3 Answers

785

Octane is the measurement of the potential energy stored in an measure of fuel. The lower octane will not cause "damage" to your car, but will combust less completely, which will leave carbon deposits in your cylinders. Over time these will build up and create performance problems. If you fill with 95 once every 5 times you fill up, that would help reduce the carbon build-up and prolong the performance life of your car

47,765

Buying fuel with a higher octane than is required by your engine is a waste of money and there is NO benefit. If your vehicle requires premium fuel then use it, if it requires regular unleaded then save yourself some money and use that. Always try to use top tier fuel as it usually have the best additive package and this will help minimize deposits and keep the fuel system clean. If you want to use a fuel additive try Techron by Chevron about every 5,000 miles. Do some reading on top tier fuel at the link.....http://www.toptiergas.com/retailers/

47,765

Also read here at the link.....https://en.wikipedia.org/wiki/Octane_rating

Your Answer

Add photo

Related Questions

  • Fuel changes 3 answers

    I own a non turbo 2004 Subaru Impreza gx and wanted to know if I can go from running it on ulp91 to ulp95 I just don't want to cause damage to the cars engine

    2004 Subaru Impreza 2.5 TS Wagon

    -

    General

  • Fuel types 2 answers

    If I have half a tank of ulp91 in my Car can I top it up with ulp95? Or do I have to wait for my car to completely run out of fuel?

    2004 Subaru Impreza 2.5 TS Wagon

    -

    General

  • Impreza fuel economy 27 answers

    I have noticed that the Subaru Impreza "non turbo models" seem to consume alot of fuel on urban driving, I can barely get 20 MPG in the city. While on the open roads and highways I can get up to 40 MP...

    2007 Subaru Impreza 2.5 i

    -

    General

  • fuel type 3 answers

    I can't find this on the website. Does the 2.5i take regular or premium fuel?

    2010 Subaru Impreza 2.5i

    -

    General

  • Subaru Impreza 1.6 03 is it good or bad on fuel consumption? 1 answer

    hi, im looking to bye one only reason i havent bought one yet is because everyone has told me it costs loads to keeping putting petrol into them, are they really that bad?

    2003 Subaru Impreza

    -

    General

Impreza

Looking for a Used Impreza in your area?

CarGurus has 19,394 nationwide Impreza listings starting at $1,995.

ZIP:

Search Subaru Impreza Questions

Subaru Impreza Experts

#1 TheSubaruGuruBoston
TheSubaruGuruBoston
Reputation 710
#2 Nick Eidemiller
Nick Eidemiller
Reputation 460
#3 F_O_R
F_O_R
Reputation 430
View All

Related Models For Sale

Used Subaru Impreza WRX
47 Great Deals out of 1,277 listings starting at $3,000
Used Subaru Outback
363 Great Deals out of 42,353 listings starting at $1,100
Used Subaru Legacy
226 Great Deals out of 14,433 listings starting at $999
Used Subaru Impreza WRX STi
28 Great Deals out of 613 listings starting at $10,990
Used Subaru Forester
411 Great Deals out of 29,354 listings starting at $995
Used Honda Civic
814 Great Deals out of 88,107 listings starting at $1,299
Used Mazda MAZDA3
283 Great Deals out of 32,563 listings starting at $1,300
Used Honda Accord
948 Great Deals out of 77,739 listings starting at $899
Used Toyota Corolla
858 Great Deals out of 70,589 listings starting at $1,874
Used Toyota Camry
1,104 Great Deals out of 90,761 listings starting at $1,599
Used Honda CR-V
920 Great Deals out of 59,346 listings starting at $1,990
Used Ford Focus
627 Great Deals out of 57,258 listings starting at $795

Used Cars For Sale

2017 Subaru Impreza For Sale
4 Great Deals out of 13,971 listings starting at $14,206
2016 Subaru Impreza For Sale
39 Great Deals out of 829 listings starting at $15,044
2015 Subaru Impreza For Sale
24 Great Deals out of 667 listings starting at $11,495
2014 Subaru Impreza For Sale
55 Great Deals out of 1,178 listings starting at $8,345
2013 Subaru Impreza For Sale
22 Great Deals out of 648 listings starting at $6,490

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.