No way...Because everyone re-labeled their Group II oils as Synthetic Blend. There are no rules, adding even 1% of Group III (that's not a true synthetic IMO) lets them put that label on.
I bet the formulators, chemical engineers, and other scientists who regularly visit this forum have plenty of entertainment or at least roll their eyes every so often. FWIW, even groups I and II are not really unprocessed mineral oil. I would call EHC45, EHC65 (etc...), and VISOM highly processed and clean base oils. So is GTL, for that matter. "Synthetic Elitism" is terrible, and it must be pure torture for those who obsess about what's "synthetic" and what's "dino" motor oil, lol.Anyone that posts that Group III base stocks are "slightly processed oils" does not know what they are talking about.
Time is the primary component of "protection". So all else being equal a "synthetic" will not suffer from the same level of degradation in performance over time vs conventional dino of the same weight and HTHS.Ive been searching and searching, i can't find PROOF that in a normal combustion engine, that synthetic oils like amsoil protects any better than dino.
i'm a normal usage. not exteded run times or extream temps.
Late 1980's into early 1990's Amsoil promoted a Lifetime Oil Change program with a specific non-detergent Amsoil oil and matching $25 oil filter. One was to change the filter every year and add a new quart of oil "to replenish the additives."There was no such thing. You maybe are thinking of something else? Don't know, but please keep it factual.
I'm calling BS/false memory. Do you even have proof?Late 1980's into early 1990's Amsoil promoted a Lifetime Oil Change program with a specific non-detergent Amsoil oil and matching $25 oil filter. One was to change the filter every year and add a new quart of oil "to replenish the additives."
Customers were delighted with their beautiful honey-colored oil right up to the moment the engine seized.
Fact. I sat through a sales pitch. Didn't buy, but friends did. Why would I use a $25 filter every year when 5 quarts of Mobil-1 was only $17.88 at Walmart?
Havoline ? Probably using the CVX version …There is no disclosure from the manufacturers where they're using GrpII+ EHC but one odds-on favorite may be Havoline High Mileage "Synthetic Technology" motor oil. Just my opinion based on their curious wording.
Most wear occurs at warm-up and a 5w30 Syn vs a 5w30 Blend (they're all "blends" now) are equally viscous unless we're talking extreme cold temps.I'm sure those who say they can't find anything that states syn protects better than dinos have heard that 90% or more of engine wear occurs during start-up when all of the oil is in the sump. Synthetics flow better/faster to the upper parts of the engine, therefore the engine wears less...it's not really rocket science...