Fuel types


Asked by Oct 29, 2015 at 10:12 PM about the 2004 Subaru Impreza 2.5 TS Wagon

Question type: General

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

2 Answers


If this is a octane rating your inquiring about then no you don't have to wait, it should mix fine, if your concerned about it you could just add some booster to the fuel. HTH


You'll end up near 93. When my MR2 used to run on 90 I'd just mix 87 and 93 to get 91 (it's not quite linear) for cheaper than 89 "mid" grade. Don't worry about it. And why do you want 95? Are you running a chipped turbo or water injection?

Your Answer

Add photo

Related Questions

  • 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



  • 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



  • Do 2015 CVT Subaru Imprezas have an oil consumption issue? 39 answers

    I am considering buying a 2015 Subaru Impreza and wondering if it might suffer from excessive oil consumption. I have asked Subaru about this and they say that oil consumption has been an issue with s...

    2015 Subaru Impreza 2.0i Limited



  • Recommended shifting speeds for 2002 subaru impreza outback sport 1 answer

    I just got my first subaru and first AWD vehicle being a 5 speed 2002 subaru impreza / outback sport wagon. I noticed that the manual gives a recommended shifting speed of 3rd to 4th at 40 mph which...

    2002 Subaru Impreza



  • How can I get some more hp out of my impreza 4 answers

    I have a 2011 Subaru Impreza non-turboed. I want to get some more horsepower out of it when I drive up to the mountains. There is no cold air intake that fits my car without having to make my own p...

    2011 Subaru Impreza 2.5i Premium Hatchback


    Car Customization

Search Subaru Impreza Questions

Subaru Impreza Experts

#1 FordNut
Reputation 480
#2 Nick Eidemiller
Nick Eidemiller
Reputation 420
#3 TheSubaruGuruBoston
Reputation 360
View All

Related Models For Sale

Used Subaru Impreza WRX"
48 Great Deals out of 1,352 listings starting at $2,500
Used Subaru Impreza WRX STi"
36 Great Deals out of 594 listings starting at $8,977
Used Subaru Outback"
435 Great Deals out of 30,286 listings starting at $1,295
Used Subaru Legacy"
248 Great Deals out of 17,730 listings starting at $1,295
Used Subaru Forester"
323 Great Deals out of 19,836 listings starting at $1,099
Used Honda Civic"
1,204 Great Deals out of 57,864 listings starting at $1,295
Used Mazda MAZDA3"
475 Great Deals out of 24,834 listings starting at $1,900
Used Mitsubishi Lancer Evolution"
23 Great Deals out of 833 listings starting at $14,999
Used Honda Accord"
1,360 Great Deals out of 78,137 listings starting at $1,395
Used BMW 3 Series"
1,641 Great Deals out of 39,708 listings starting at $1,500
Used Toyota Corolla"
1,424 Great Deals out of 66,817 listings starting at $1,295

Used Cars For Sale

2016 Subaru Impreza For Sale
4 Great Deals out of 3,462 listings starting at $15,991
2015 Subaru Impreza For Sale
37 Great Deals out of 631 listings starting at $12,999
2014 Subaru Impreza For Sale
37 Great Deals out of 763 listings starting at $11,900
2013 Subaru Impreza For Sale
67 Great Deals out of 1,183 listings starting at $9,492