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

685

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

35,035

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/

35,035

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

Your Answer

Add photo

Related Questions

Impreza

Looking for a Used Impreza in your area?

CarGurus has 10,618 nationwide Impreza listings starting at $1,495.

ZIP:

Search Subaru Impreza Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Subaru Impreza Experts

#1 TheSubaruGuruBoston
TheSubaruGuruBoston
Reputation 490
#1 FordNut
FordNut
Reputation 490
#3 Nick Eidemiller
Nick Eidemiller
Reputation 440
View All

Related Models For Sale

Used Subaru Impreza WRX
38 Great Deals out of 1,173 listings starting at $2,795
Used Subaru Outback
366 Great Deals out of 25,647 listings starting at $1,000
Used Subaru Impreza WRX STi
22 Great Deals out of 571 listings starting at $12,995
Used Subaru Legacy
199 Great Deals out of 15,039 listings starting at $900
Used Subaru Forester
332 Great Deals out of 20,048 listings starting at $1,382
Used Honda Civic
937 Great Deals out of 68,324 listings starting at $1,500
Used Mazda MAZDA3
398 Great Deals out of 27,738 listings starting at $1,200
Used Honda Accord
1,084 Great Deals out of 76,819 listings starting at $1,395
Used BMW 3 Series
1,538 Great Deals out of 39,673 listings starting at $1,495
Used Toyota Corolla
1,082 Great Deals out of 64,191 listings starting at $1,595
Used Mitsubishi Lancer Evolution
23 Great Deals out of 672 listings starting at $13,977
Used Honda CR-V
907 Great Deals out of 66,880 listings starting at $1,995

Used Cars For Sale

2017 Subaru Impreza For Sale
5,536 listings starting at $18,615
2016 Subaru Impreza For Sale
21 Great Deals out of 956 listings starting at $15,999
2015 Subaru Impreza For Sale
24 Great Deals out of 528 listings starting at $12,967
2014 Subaru Impreza For Sale
23 Great Deals out of 738 listings starting at $11,250
2013 Subaru Impreza For Sale
39 Great Deals out of 821 listings starting at $8,995