Use early year in the Mustang. Well worth the money.

Awesome

Finally able to get a great product on time, and know that it is the gold standard. Other lesser products were unpredictable and not always available. Feel confident using AMSOIL in all my engines going forward!

Trusted oil, been using this for years.

I would highly recommend this product along with all many of the others. Have been using Amsoil for years after getting excellent to perfect outcomes.

I've been putting Amsoil OE 5w20 in my 2011 Ram 1500 for about 9 years after getting 1 more mpg when I first tried Amsoil. Have 174,000 on it now and decided to try the XL "Boosted". Was getting 11mpg when I first bought it. 12mpg since then and now after trying this "Boosted", I actually went over 13mpg after 9 years of being happy with 12mpg. Amsoil for me is my go-to oil, lubricants, greases, etc for everything I have and will definitely be the only product I put in my new truck when this Ram's wheels fall off. I'm now going to try Amsoil Marine in my Jet-Ski and Sea-Doos. I love Amsoil!

I only use amsoil products in all our vehicles

It's the only oil I'll put in my car

The best oil in the world, I use it in all my vehicles.

This is great oil for the everyday driver. I put this in my son's 2014 Mitsubishi Outlander Sport. He doesn't put many miles on in a year so I'll change the oil once a year along with the filter, six months later I'll change the filter only. I have been doing that with my 2009 Nissan Altima Coupe for 4 years and it runs great. I have been using Amsoil in everything I own for 25 years.

Been using Amsoil in this Toyota since it was new. A bit over 100,000 miles and it still runs quietly with no problems.

Been using this in my 2014 F-150 since it was new. Approaching 100,000 miles with no issues with this engine or transmission.

I stand by my first review of the 5W 20 Synthetic oil I did.

I've owned this car since it had 63000 miles on it, now it has just rolled 250k. Has had full synthetic since I bought it, and only the last 10-12 months with amsoil. I have noticed since switching when I periodically check the oil, the level is where it was when I did the oil change and the most noticable thing is how much cleaner it stays.

We had to do an engine swap and bought generic oil after install to test it out. Once it was driven a while we put in amsoil and the oil pressure increased significantly. That's why all of our equipment from compressors to trucks only gets amsoil. They are unmatched in every field.

After seeing how it makes my old truck run, I decided to use this product in my Jeep

It helps my 27 year old truck with 141,000 run better, and offers great engine protection.

Car gained power and hasn't used a drop of oil. Seems to be running cooler as well. Very impressive.

So far all of Amsoil products I've used are top notch and very quick shipping will continue to use there products

It's a very good oil engine runs smoother and a little better fuel mileage