Re: Synthetic lubricants

Posted by RusselAZ on July 31, 2004 at 00:31:16 from (67.136.87.95):

In Reply to: Synthetic lubricants posted by Ron on July 30, 2004 at 06:47:22:

All my engines get synthetic oils and my trans and gear boxes.

I started in 1976 with Amsoil in Nebraska. In the winter engines start easy. Now, in Arizona in the summer heat I don't worry.

I use them because they keep working when you forget to change the oil and/or filter. AND when conditions get horrid. I have lots of examples from my experiences on my own engines and from an industrial plant. Even my swamp coolers get synthetic oil. 25 years on the same shaft bearings.

My worst case story was on my home built rubbish grinder. This machine has an eight horse briggs engine on it with aluminum bore and piston. I was grinding up a bunch of tree branches etc one day and started smelling something burning. Didn't think to much about it because sometimes chunks get stuck beside the impeller and just burn their way out. The engine is belted 1:1 with the flail impeller and runs 3600 all the time. Well, you stand on one side and feed the hopper and the engine is on the other side. In this instance the air screen on the flywheel was covered with leaves and debris. After a bit the smell mentioned above started smelling like plastic. By the time I figured out the smell was NOT coming from out the discharge chute the paint on the crankcase of the 8HP briggs was smoking. That was what the plastic smell was. I immediately shut it down and cleaned the air screen. I just knew the piston had to be scuffed. I took the head off and looked at the cylinder and the hone marks were still like the day I put them in it. Drained the oil and put in new, (new being relative, all the air cooled engines get the drained oil from the cars) and fired it up and it was OK. That was probably 9 years ago and it is still ready to grind and chop for me.

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