I run Amsoil in all vehicle, including my Harley. I usually change after two years or 10,000 miles. I didn’t put many miles on any of my vehicles, my 99 Jeep has 164,000 miles and running strong, my America Eagle had 137,000 miles when I traded it, my wife’s 97 Buick has 44,000 miles and all running strong. I just change oil filter at 5000 miles. When my current motorhome is due a oil change, I will go to Amsoil. Great product!
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