Originally Posted By: BrocLuno
Originally Posted By: Linctex
Originally Posted By: dnewton3
Generally, while PAOs, esters and GTLs are impressive, I've not seen any substantial evidence that they can distinguish themselves in daily normal applications for the common BITOGer.
But a lot of us aren't "Daily, normal, common BITOGers...."
Folks like me with turbocharged engines and that do a lot of towing would like to know what handles heat best on the piston ring packs and in the turbo bearings.
Yes, Good Ol' SuperTech and Harvest king is good enough for 98% of the people here...
How about a little CAT 3208 making 35 psi and 420 HP at 3,200 continuous in marine - that's 8 hours a day, 5 days a week spinning a Hamilton Jet. There is no truck load anywhere near that for heat. Trucks at least get to shift and coast now and then... 1W pistons and the biggest squirters CAT could supply, careful break-in, and it's still running today - 10 years after I last saw it
Needed two sets of steel shim head gaskets in 10 years. They'd start weeping and it was time. Next step was to O-ring seal the decks, but we lived with head gasket replacements ...
But I have PERSONALLY had to replace the pistons on an engine (*that I owned*) that had all the pistons rings weld themselves in place (a heavy towing engine) and I need an oil that can prevent that.
So, let's focus on the extreme aspects of oil performance, shall we?
How about a small cam Cummins tuned to 444 in a 3-axle Pete tow truck that would pyro 1,200*F in about 1 minute from 550 normal cruise. Yeah we used the "extra" power very sparingly because you could not cool the internals. It was there when needed for short bursts only.
You welded rings - it was insufficient piston cooling. You needed
much higher oil flow and bigger squirters to cool the pistons. Somehow I doubt you had either ...
Good old everyday HDEO's have been keeping millions of big rigs going with boost on the peg over the Rocky Mtns for decades. Some of those engines were tuned pretty tight to make the average trip length shorter and keep the speed up on long pulls like 30 miles constant grade.
The oils don't fail, the builds do when the wrench makes a mistake or specs the wrong parts ...
Is what you are saying is not to let our preconceived notions get in the way of facts?