definitely not hpl. what is the psychology in paying more for oil like amsoil and this hpl? I personally never used either I know many of peoples along with auto mechanics that never used these brands and never even suggested them.
I don’t understand the psychology of criticizing things you don’t understand.
Some of the dumbest, most ignorant things I have ever heard about oil have come from mechanics. My favorite, “You can’t use that 0W-30 here in Virginia, it won’t make enough pressure when the engine is cold.”
Why would I take a recommendation from someone that stupid about oil?
Why HPL?
Small American company whose focus is on racing and industry, but has been generous enough to tailor their products to the requests of people on this board.
We represent about 1% of their sales, but they are still responsive to our input and requests.
They use superior ingredients in their blends, and the oil can, and has, lasted over 30,000 miles in regular service, see Wayne’s UOAs on his Durango. The engine is spotless inside and still on the road, still with great compression.
Their formulation consultant is Dr. Leslie Rudnick, who literally wrote the book on synthetic oil. Maybe you would like a copy?
Lubricant Additives: Chemistry and Applications, Third Edition (Chemical Industries)
https://a.co/d/4XMBBqF
Their lab is among the best, and is featured in Lake Speed’s videos when he tests oil.
They have held open houses, provided tours, and been transparent and helpful in their interaction with their customers.
For example, I needed a 75W for my Volvo manual transmission, they didn’t list it on their site, but they do make it and it works great in that car and in my Tundra transfer case - by the way, it’s 1/3 the cost of the Toyota OEM oil.
There are major racing teams who use HPL, exclusively, because of the HP and performance gains, verified on multi-million dollar dynos and in racing. HPL doesn’t pay them, the way that Mobil, or Red Line, or many others pay, the teams choose HPL because of performance and those teams pay HPL.
All of the above, by the way, has been discussed on BITOG.
David Ward, the owner/founder of HPL is a good man, and I prefer to support him over supporting a giant multi-national.
Make your choice, express your opinion, but inform yourself before doing so.