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

19,815

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

4,570

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....

19,815

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.
4,570

What? That doesn't make sense.

19,815

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

  • Subaru 3.6 Six vs. 2.5 Four, is this true? 4 answers

    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...

    2010 Subaru Outback 2.5i Limited

    -

    General

  • 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

  • 2.5 Four vs 2.5 Five ? Decision? Or would you buy a 3 Cylinder car? 7 answers

    2.5 Five Cylinder cars have the same displacement as 2.5 Fours only smaller . Do you think they may work harder under load conditions to produce torque and run slightly hotter than the larger Fours ...

    2010 Subaru Outback 2.5i Limited

    -

    General

  • Subaru 2.5 engine 19 answers

    How good is the 2.5i engine? Any major widespread problems?

    2009 Subaru Outback 2.5i Special Edition

    -

    General

Outback

Looking for a Used Outback in your area?

CarGurus has 42,353 nationwide Outback listings starting at $1,100.

ZIP:

Search Subaru Outback Questions

Subaru Outback Experts

#1 Markw1952
Markw1952
Reputation 7,000
#2 TheSubaruGuruBoston
TheSubaruGuruBoston
Reputation 2,200
#3 F_O_R
F_O_R
Reputation 1,840
View All

Related Models For Sale

Used Subaru Forester
412 Great Deals out of 29,360 listings starting at $995
Used Subaru Impreza
204 Great Deals out of 19,396 listings starting at $1,995
Used Subaru Legacy
226 Great Deals out of 14,436 listings starting at $999
Used Honda CR-V
920 Great Deals out of 59,352 listings starting at $1,990
Used Toyota RAV4
890 Great Deals out of 67,128 listings starting at $1,990
Used Toyota 4Runner
261 Great Deals out of 19,022 listings starting at $2,500
Used Toyota Highlander
358 Great Deals out of 26,011 listings starting at $2,800
Used Toyota Tacoma
473 Great Deals out of 41,593 listings starting at $1,995
Used Honda Accord
947 Great Deals out of 77,741 listings starting at $899
Used Ford Escape
1,428 Great Deals out of 90,841 listings starting at $900
Used Jeep Grand Cherokee
1,022 Great Deals out of 72,256 listings starting at $700
Used Toyota Camry
1,103 Great Deals out of 90,763 listings starting at $1,599
Used Honda Pilot
389 Great Deals out of 22,309 listings starting at $1,500

Used Cars For Sale

2017 Subaru Outback 2.5i Limited For Sale
22 Great Deals out of 13,203 listings starting at $25,787
2016 Subaru Outback 2.5i Limited For Sale
25 Great Deals out of 407 listings starting at $18,913
2015 Subaru Outback 2.5i Limited For Sale
20 Great Deals out of 575 listings starting at $15,990
2014 Subaru Outback 2.5i Limited For Sale
21 Great Deals out of 478 listings starting at $11,999
2013 Subaru Outback 2.5i Limited For Sale
10 Great Deals out of 334 listings starting at $8,950

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.