This is my first time using Amsoil and they have great communication, shipping speed & well packaged. Now that I think about it I have a 09 GMC Sierra with a 4.8L & it used to have a lifter tick sound but I haven’t heard it since I changed my oil to this OE Synthetic.

Great lubricant. My engine even sounds different. Change every 10,000 miles. The difference in my car is amazing. I will continue to use this oil in all of my cars.

my first year using Amsoil products in my car and small engines. so far I cant complaint .I really notice the difference and will continue to use Amsoil products.

Ideal for stock cars or trucks

Best oil money can buy, use it in all my vehicles and power equipment. American made American proud to use. Recommend to all my family and friends!!

Love Amsoil its the BEST. Mahalo

Until this year, I always ran Pennzoil. I had always liked Amsoil, but it was difficult to get, and it was cost prohibitive compared to off the shelf oils. Since then Amsoil has continued to deliver a great product, and prices are very competitive, and most of the time better than competitors when oil change intervals are factored in. I used Amsoil OE 5w30 in one vehicle initially (2001 Suburban, 250,000 miles), which resulted in higher, more stable oil pressure. I have also extended oil change intervals to 5,000 miles over the 3,000 I was doing. I have since started using OE 5w30 in all of my vehicles. This is an outstanding oil, I couldn't be more satisfied.

The full synthetic oil is great. However, on a cold start the engine (5.3) is noticeably noisier. I switched from Mobil 1 high mileage full synthetic, which seemed to have kept it quiet. Also, at high RPM the truck seems to run a lot smoother with the Amsoil.

Gives me peace of mind to know this oil out preforms the factory fill. There is a lot of value for this competitively priced synthetic oil, and the containers don’t tip over easily.

No issues so far.

Been running this in my Subaru for 50,000 miles and I’m super happy. Great product

I've used Amsoil products in my vehicles for around ten years. I like the oil change intervals and the quality of Amsoil.

just switch to this oil a week ago, had been running 10w-40 mobil hi mileage. Put in 2010 avalanche with 110k on it keeps lifters quite on start up, also changed 03 Tahoe with 197k on it. Valvetrain operates smoother. Will continue to use

You can tell right away that this is good stuff just by the way pours out of the bottle

Change to Amsoil as soon as I got my truck. It helped my gas mileage greatly. Engine runs smooth and lifters quieted also.

Excellent oil!! Love 5he protection I get from using it👍

I found Amsoil about 2 years ago and figured I've tried everything else why not give it a try. I bought oil along with amsoil engine flush . I flushed my engine and seen all this gunk come out of my engine It was unreal . Then I put Amsoil 5w30 oe oil in and drove it for 5000 miles . I flushed agian with Amsoil motor flush no gunk came out . It seem I had my answer other oils had impurities in them and would leave sludge in the engine and that's not good. I thank everyone should give it a shot. The proof is in the oil