Lube Guard Oil Treatment


Asked by Aug 29, 2016 at 11:47 AM about the 2010 Subaru Outback 2.5i Limited

Question type: Maintenance & Repair

Please let me know if you have any experience with this product .
Someone recommended it, but, I normally don't use additives..... just me..

5 Answers


Additives are great at increasing fuel mileage slightly. This is accomplished by slightly lightening your wallet. With a lighter wallet your vehicle has less weight to move around thus better fuel economy. Pick a name brand quality engine oil and all the necessary additives are already in it. There is no need for oil conditioners, stabilizers or other additives. The motor oil vendors have spent millions and years engineering their lubricants for optimum performance.

2 of 2 people found this helpful.
Best Answer Mark helpful

Lube Guard products are very good in helping the symptoms of a problem you may already have, but they are not a fix, as far as adding it to a good engine or tranny I can't say I have seen any added benefit. Now if you have a high mileage unit the only product I have seen personally work is Slick 50. A close relation of mine always added a quart to his engine at every oil change, one night he was driving when his oil pressure went to 0, he was 20 miles away from home, so he gritted his teeth and drove it slowly home, it made it. after wards after tearing the engine down the only thing damaged was the lifters, all of the bearings were still good even those on the cam, but as he was already that far he just overhauled it anyway. HTH

1 of 1 people found this helpful.

Similar experience with Slick 50 here. I worked at a Ford dealership in the parts department. We had a brand new Thunderbird 3.8 V6, 1989 I think, had a squeaky rocker arm. The Ford friction modifier used to fix the problem was on backorder and the customer was headed to the dealership to pick up his new Thunderbird. Service manager came to me and asked if I had a suggestion and I recommended trying part of a bottle of Slick 50. I went to a parts store and got a bottle of Slick 50 and poured about 1/2 of the bottle into the running engine. The squeak stopped immediately and as far as I know never returned. I gave the remainder of the Slick 50 to the service department dispatcher and he used it in his high mileage Ranchero and he swore that the 1/2 bottle Slick 50 silenced his noisy valve train. There are some additives such as Marvel Mystery Oil and others that can help stop a noise or other issue, but for an engine in good operating condition no additive is necessary.


Hi Bob, loved your answer above and just marked it "best answer"... YES, I actually don't use additives, but, someone who highly recommended it, but, you're absolutely right about the "lighter wallet"and I think that the marketing department is loving it.... And, I agree tennisshoes-, if you really need work done on your car, there's only one right way to do it.. BUT, I enjoyed reading your humorous comments very much... It also validates what I suspected that high quality fuel and maintenance is all that is necessary.,. Finally, Bob, I see from some of the other questions recently on the forum, you and I have agreed on a number of issues lately.... Be well...

1 of 1 people found this helpful.

Think of chemical additives like vitamins: if there's a shortage- related illness they're necessary. Otherwise, not.

Your Answer


Looking for a Used Outback in your area?

CarGurus has 38,482 nationwide Outback listings starting at $1,700.


Subaru Outback Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Subaru Forester
310 Great Deals out of 36,267 listings starting at $999
Used Honda CR-V
617 Great Deals out of 67,193 listings starting at $1,800
Used Subaru Legacy
160 Great Deals out of 14,047 listings starting at $1,250
Used Subaru Impreza
177 Great Deals out of 21,057 listings starting at $1,333
Used Toyota RAV4
521 Great Deals out of 66,209 listings starting at $1,995
Used Toyota 4Runner
314 Great Deals out of 30,395 listings starting at $2,500
Used Toyota Highlander
477 Great Deals out of 44,975 listings starting at $1,750
Used Toyota Tacoma
445 Great Deals out of 41,056 listings starting at $2,600
Used Honda Accord
592 Great Deals out of 92,752 listings starting at $1,495
Used Jeep Grand Cherokee
800 Great Deals out of 73,393 listings starting at $950
Used Toyota Camry
890 Great Deals out of 73,115 listings starting at $1,400
Used Ford Escape
969 Great Deals out of 105,825 listings starting at $550
Used Honda Pilot
439 Great Deals out of 39,093 listings starting at $999

Used Cars For Sale

2018 Subaru Outback 2.5i Limited For Sale
9,422 listings starting at $28,878
2017 Subaru Outback 2.5i Limited For Sale
23 Great Deals out of 853 listings starting at $23,500
2016 Subaru Outback 2.5i Limited For Sale
29 Great Deals out of 573 listings starting at $16,995
2015 Subaru Outback 2.5i Limited For Sale
22 Great Deals out of 712 listings starting at $15,000
2014 Subaru Outback 2.5i Limited For Sale
14 Great Deals out of 327 listings starting at $11,993

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.