Subaru 3.6 Six vs. 2.5 Four, is this true?

18,795

Asked by Mar 18, 2016 at 12:22 AM about the 2010 Subaru Outback 2.5i Limited

Question type: General

Is it true that the Subaru 3.6 H6 really burns more oil than it's smaller sibling,  the 2.5 Four?    Take a look at this article from Consumer's Reports,

http://www.consumerreports.org/cro/magazine/2015/06/excessive-oil-consumption/index.htm

4 Answers

4,290

It's a coarse, naive generalization. Subaru has changed the design of its piston rings several times already to try to address this issue. So it depends upon age, which ring set, etc. Naturally, the 3.6 would "consume" 50% more oil, as it uses 6 of the same size cylinders as the 4. Duh....

18,795

I didn't say this...Consumers Reports did. From reading the report and the conspicuous absence of the 2.5 Four, one might conclude that the 3.6 flat six consumes more oil irrespective of the engine size. And, remember, there's a much smaller percentage of these cars produced and sold.

1 of 1 people found this helpful.
4,290

What? That doesn't make sense.

18,795

OK, but, WHY is the 2.5 Four NOT on the list of The Thirsty 30? And, did you see my question about whether the 2010 Subaru Outback had the newly designed head gaskets??

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • 3.6 vs. 2.5 - Reliability, Stalling and Oil Burning 14 answers

    Recently, I've read and heard from several sources that there's more STALLING problems with the 3.6 H6 Boxer engines. This is NOT GOOD. In traffic situations, it's very dangerous to have your eng...

    2010 Subaru Outback 2.5i Limited

    -

    General

  • 3.6 benefits over 2.5 Four cylinders?? 2 answers

    What are the major benefits or demerits ( poorer handling ?) of the H6 engine. Is the extra two seconds or less of acceleration really worth the fuel cost. And, how much EXTRA passing power do you h...

    2015 Subaru Outback

    -

    General

  • Are Six Cylinder Engines Passé? 16 answers

    With all of the advancement of naturally aspirated Fours and greater efficiency of performance, reliability and fuel economy, do you really need a gas guzzling six cylinder engine with more repairs ...

    2010 Subaru Outback 2.5i Limited

    -

    General

  • Handling or Acceleration 6 answers

    Subaru's 2.5 Four is about 164 pounds lighter in the front end than the 3.6 Six making it easier to steer. Would you rather have the increased handling or the extra speed to 60 mph by two seconds....

    2010 Subaru Outback 2.5i Limited

    -

    General

  • Subaru Outback 2.5i vs 3.6i? 13 answers

    I am looking for a reliable car to take with me to Montana while I live there for 6 months. I have been looking specifically at the 2011 Outback 2.5i, but seeing so many for sale makes me question i...

    2011 Subaru Outback 2.5i

    -

    Shopping & Pricing

Outback

Looking for a Used Outback in your area?

CarGurus has 38,532 nationwide Outback listings starting at $1,995.

ZIP:

Search Subaru Outback Questions

Subaru Outback Experts

#1 Markw1952
Markw1952
Reputation 6,570
#2 TheSubaruGuruBoston
TheSubaruGuruBoston
Reputation 2,030
#3 F_O_R
F_O_R
Reputation 1,550
View All

Related Models For Sale

Used Subaru Forester
359 Great Deals out of 29,339 listings starting at $1,750
Used Subaru Impreza
187 Great Deals out of 17,841 listings starting at $1,250
Used Subaru Legacy
199 Great Deals out of 15,856 listings starting at $999
Used Honda CR-V
896 Great Deals out of 61,171 listings starting at $988
Used Toyota RAV4
742 Great Deals out of 71,773 listings starting at $1,895
Used Toyota Highlander
345 Great Deals out of 24,768 listings starting at $2,499
Used Toyota 4Runner
254 Great Deals out of 20,494 listings starting at $1,800
Used Toyota Tacoma
544 Great Deals out of 40,814 listings starting at $2,495
Used Honda Pilot
381 Great Deals out of 21,194 listings starting at $1,500
Used Honda Accord
813 Great Deals out of 84,286 listings starting at $1,050
Used Jeep Grand Cherokee
1,029 Great Deals out of 74,887 listings starting at $750
Used Subaru Impreza WRX
27 Great Deals out of 1,216 listings starting at $4,455
Used Toyota Camry
1,006 Great Deals out of 90,918 listings starting at $650

Used Cars For Sale

2017 Subaru Outback 2.5i Limited For Sale
13 Great Deals out of 11,841 listings starting at $23,716
2016 Subaru Outback 2.5i Limited For Sale
19 Great Deals out of 376 listings starting at $20,995
2015 Subaru Outback 2.5i Limited For Sale
20 Great Deals out of 565 listings starting at $14,988
2014 Subaru Outback 2.5i Limited For Sale
20 Great Deals out of 477 listings starting at $11,999
2013 Subaru Outback 2.5i Limited For Sale
13 Great Deals out of 320 listings starting at $9,988

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.