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Originally Posted by willrev
No one ever mentions this brand of oil :
Lubrication Engineers, Inc. abbreviated LE
Monolec Ultra Engine Oil
It is NOT a synthetic. It is the highest grade of base stock available. The oil is red in color. It exceedes API Service CH-4, CF-2, CF/SJ, Mack EP-M+
It is an extended drain engine oil used exclusively by the earth moving equipment endustry. It goes into million dollar machines. I am switching to the 15W40.
The Mercedes dealer in Raleigh, NC uses the LE monolec in differentials. They started using Mobil One in the new cars and had to rebuild several engines according to the service manager. the customers were not happy getting a reubild at 60,000 miles.
The LE can go 10,000 miles or more. The local rep just retired at 83 years old. He has worked for this company his whole life. He told me a cross country trucker switched form Rotella which from east to west coast consumed 9 gallons per trip and when switched to the LE Monolec, he dropped his consumption of oil to 3 gallons per trip.
I will let you know how it works in my car. I am getting some blowby now. I am real interested in seeing if this stuff is as good as everyone says.
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This goes against everything that has ever been discussed, researched, or proven about synthetic engine oil in general and M1 in specific. I will continue to use M1 synthetic engine oil in my car to quantifiable, measurable benefit and leave the theory and conjecture to people who have nothing better to do with their time.
M1 didn't cause the rebuilds. That's implausible, furthermore impossible. If the new cars were broken in with the proper oil then switched to synthetic then it has to be something else that caused the rebuilds. To think it was caused by Mobil 1 synthetic engine oil, a pretty solid and proven product, is absurd at best. Perhaps the break-in oil was left in a little too long, or the service dept. there is just plain inept.
The LE products are very good I'm sure, but also quite a bit more expensive and no doubt complete overkill. Some say Amsoil is overkill, others say even M1 is overdoing it, that Delo400 is way good enough. I like to sit somewhere in the middle with my preference. I have never responded to an oil thread before so this is my one time.