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I went back and looked at your reports again. Looks like you were having copper issues from the start unfortunately. Maybe something was bad from the start?

Reply. I was thinking that about the si. Wonder if I should send a base oil sample to get real numbers so I know the oil starting point. Let's see how far I can push it.

Here are two oil samples from my Forester. One with amsoil 0w-20 one with HPl. Same weather conditions. Amsoil had 6k. Hpl had 8k. I can't complain with either results. not a perfect comparison because one is 6k miles the other 8k but still interesting to me. Just figured I'd share it.

Updated oil reports. One with amsoil one with HPL. Still high iron at 22k miles on the engine. Debating about trying the hpl 5w30 but still not sure about it as cold temps running in NY and traveling and such. An 0w30 dexos D would be nice too if it was made.

Any updates uoa results with using 5w30. How's she running? Copper ever get identified or go down?

2024 GMC Sierra with 3.0 Duramax diesel. At 11820 miles on truck took a oil sample with 4500 miles on the oil using amsoil 0w-20 diesel oil. They flagged a few things so we changed the oil and took another same at 17,000 miles with about 4500 on the oil again. The wear metals just about...

I like to play with different top quality products and I like HPL small company style. Shipping is a killer though. That's my only drawback right now.

Passenger car engine oil dosnt list 0w-20. Premium passenger car does list 0w-20

That's great information. Ive been running amsoil 0w-20 since new and I do not burn oil. 62k on mine so far. Have you used there CVT oil yet. Or there gear oil?

Which HPL for the 2016 Subaru Forester 2.5. Spec calls for 0w-20. Hpl offers Euro formula Premium passenger Premium plus Super car. This will be for all season. So cold winter temps and hot summer temp. Located in NY.

Hahah. I've been paying for my own amsoil from him since i first started driving. Iam 36 with a family and plenty of cars and miles under my belt. They get plenty of PM from me for there cars, boats, generators and such. Ive never had a problem with amsoil and neither has my dad but we...

Thank you, you didn't have to. I don't want to be a bother if they are just insanely busy right now. Smaller companies sometimes it can work like that.

Good morning everyone. Long time lurker first time posting. Long time amsoil user, (father is a small dealer). But I have no problem switching to whatever oil responds best to my vehicles. I am interested in some of the HPL products and I emailed HPL and haven't heard anything in over a...