1000 votes
Fellow mu-X owner here! If you're thinking about upgrading from the standard Isuzu Genuine Motor Oil 10W-30, check out the ZIC X7 Diesel 10W-30 Fully synthetic. I used Amsoil Turbo Truck 5w40 too (10k km interval) but it's expensive for my Garage queen mux haha. Mobil Delvac1 5W-40 is good as well.
I have Signature in my 25. Smoothed out the engine noises quite a bit.
My biggest regret, not swapping out the shitty 0w-20 factory filled oil for some 5w-30 Amsoil, Motul, or Pennzoil Ultra platinum the moment I took it home. Don\u2019t wait till 1k miles.
Engine noise is a little, well noisy, mine is less rumbly/vibrationy after I changed my oil and used Amsoil Hybrid oil. I can’t generally feel anything when the engine kicks on now, before I could definitely feel it every time it kicked on.
I switched oil to AMSOIL signature series synthetic, from everything I read, it out performs other oils, used to use Mobil 1
My 2016 GT350R has almost 25K miles and has never needed oil between changes. I use Amsoil every 5000 miles, sooner depending on track abuse.
Amsoil 100%, I tested it quite a few, and I’m noticed the least amount of decoration and power loss with it
5w30 Amsoil, ignore the tick it's normal.
Amsoil engine oil
Also, I have upgraded to Amsoil Synthetic Engine Oil which further helps for maintaining DPF health as it reduces ash that can accumulate and plug the filter.
Write your review about engine oil AMSOIL
Help others - share your experience with this part.
The brand is registered in USA. Official website: https://www.amsoil.com.
In March 2026, PartReview users have a positive opinion of AMSOIL engine oil.
PR Score — 93 out of 100, based on 328 reviews and 999 votes. 300 positive reviews, 15 neutral reviews, 13 negative reviews. Average rating — 4.5 (out of 5). Vote balance: 930 up, 69 down.
In the ranking of the best engine oil this part is at position 6, behind MOTUL and Shell , but ahead of VALVOLINE and PENNZOIL.
Users also evaluated the qualities of AMSOIL engine oil:
See which car brands and models owners choose AMSOIL engine oil for. Below are car-specific ratings where this part is in the Top-3:
There are 31 comparison of AMSOIL engine oil with other manufacturers on PartReview.
In particular, see which engine oil are better: AMSOIL or OEM FORD, AMSOIL or Lucas, AMSOIL or Motorcraft, AMSOIL or OEM Audi, Kendall or AMSOIL .
