I am tired of people mixing oils

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^^^ Also chain oil is very tacky to prevent slingoff and messing up your bar. I get the Stihl bar and chain oil in the gallon jug and it lasts for years. Not expensive either.
 
I don't mean to sound uncharitable, but I'm thinkin that our buddy AE was nothin' more than bored when he started this thread. Nothin' cures a dull day like pokin' a stick in a hornet's nest then steppin' back and watchin' them buzz around!

He did drop a pretty big hint that he's just foolin' with us - lubin' a chainsaw chain with used engine oil? Puttin' ATF in the Toro? He's just checkin' to see if we're awake! What does a surgeon need a CHAINSAW for anyway!
 
I do believe Doc Haas is a knock-around kinda guy. I think he races and wrenches his own cars, his own oil (obviously), and tuneups. He knows a BIT too much to be the type to simply drop it off for service.

I figure the chain saw is for the patients WITHOUT insurance. Those folks get a shot of Jack and a bullet to bite. Drugs and scalpels cost real money.
 
This may help:

oil on shelf.jpg


Note tool in lower left corner.
 
Look at the Doc! Garden implements, I guess that's a sandblaster chamber, Doc? Nice little stash of oil, gas can, got him a blower, and look out the window, he NEEDS those garden tools, because there's a jungle growing out there!

Those uninsured patients, Doc? Do they report to the garage?
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Well, I have to agree that mixing motor oils is probably a bad idea. The chemical additives can be different from one brand of motor oil to another. I even worry somethimes if I switch oils about the motor oil that is left in the engine. If you change from Brand X to Brand Y some of Brand X is still left in the engine.

Right now I am using Pennzoil Platinum. Now if I found out another brand of oil that costs less than PP was better than PP I would have no problem switching. But I would see no point in mixing PP with the other brand of oil.

Even if I have to add some oil I prefer to use the same brand or at least use conventional motor oil from the same company. For example, if I was low on oil using Pennzoil Platinum I would use Pennzoil concentional motor oil as a add oil.
 
When I went from the 10W-60 Shell Helix Ultra in the Enzo to the GC the oil was dropped, filled with GC. Then I ran the engine to heat up the oil (and mix it up) and dropped the oil again. This second time I changed the filter too and filled it a second time with GC. I think I used 26 or 28 qts.

aehaas

PS You should see my chipper / shredder. It is one of my favorite tools !
 
Just by the way, a guy at this website a long time ago talked about how he used low air pressure to remove the rest of the old oil from the engine after an oil change. He said that typically there would be a half to a quart of oil still in the engine.
 
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When I went from the 10W-60 Shell Helix Ultra in the Enzo to the GC the oil was dropped, filled with GC. Then I ran the engine to heat up the oil (and mix it up) and dropped the oil again. This second time I changed the filter too and filled it a second time with GC.






That's known as the Patman flush on here!
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Ok, Doctor! I believe you have a chain saw, but I'm still not convinced about ATF in the Toro.

I also agree with your view on blending. I mixed a blend once of Castrol 10w-60 and GC 0w-30 - it gave me a 5w-40 kind of viscosity with a Group 4/5 composition, and the clincher was that both oils were approved by BMW for the engine. I ran it in my 2003 BMW M5 for about 4,000 miles. The UOA showed good wear results, but the threads on the lid of of the cartridge filter housing had a thin film of black goo on them. It encouraged me to try other xw-40 oils, but the mix was a one-shot wonder, not to be repeated.

It seems pretty clear that when it comes to oil, one plus one equals the total unknown.

Cheers
JJ
 
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