Ok, for @HilhavenFarm
. You had said earlier you wanted some input on Mystic oil, so I'll share my thoughts better here, so I don't muck up Lt Dan's thread any worse.
, also for you, since you didn't take the bait about oil not getting dirty because stuff doesn't wear out. I was trying to insert some humor. Lol
I fall into the group that doesn't have my oil analysed, several of my mentors growing up had problems with it, and it rubbed off. I simply don't mess with it, though someday, maybe but doubtful.
A good example I'll use here is an old 444 Cummins I used to run. I installed it used, and when I did I changed the mains and rod bearings, and ran the overhead. Inside it was not real clean, black slime stuck to everything, not sludged up, but yucky. In went the Mystic 15W-50. It would turn the oil on the stick black by the time the filters were primed. After about 200k miles, on 15k change intervals, it would go about 2500 miles before turning the oil black again. Off come the valve covers to set the valves, no black film. Not bad for an old engine that did nothing but work hard and belch black smoke. Fast forward a ways, and my source for Mystic temporarily went away, started using Rotella 15-40. Was back under the valve covers too work on the engine brakes, after about 60k of Rotella. Black sooty film is back.
Any of our engines that have had nothing but Mystic, were clean inside whenever I went in, except when coolant contaminated.
Bearings- Again, big Cummins engines.
Removing the rods and mains at 250k-300k, our engines that ran Mystic their whole lives, weren't showing any copper. During our Mystic free days, same miles, copper showing. Nothing terrible, but noticable wear.
Oil temp- same old 444. Pulling Salt River Canyon grossed out, with Mystic the highest I ever seen was 210*. With Rotella 220 was normal, 225 happened more than once. Changed back to Mystic, back down to 210 or below.
I run Mystic in most of my stuff, unless it's a leaker, then it gets Rotella or Delo. Nothing wrong with them at all.
In my mother's IDI
, with 500k miles, it gets the stick black at about 2600 miles, give or take. Without Mystic, it's black in the first 500 miles. In my Powerstroke with 116k miles, it gets darker at about 2k miles, then doesn't change until I drain it 5k. I've never run anything else in it since I've owned it, so it's not a good reference I guess.
I've had really good luck with their gear oil in many many transmissions and differentials, and oil type wheel bearings.
Had good luck with the grease too. It's all I use.
Hope it explains my thoughts better, it's limited experience, not fancy, not a computer print out, but it's what I have.
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