"synthetic" oil causing two stroke cylnder "glazing" ?
"synthetic" oil causing two stroke cylnder "glazing" ?
(OP)
http://www.legendperformance.com/technical-info/
"The most notable disadvantages of synthetics are high price, poor off-season rust protection, irritating smell along with eye and respiratory discomfort due to the solvents used in manufacturing and loss of ring seal due to “glazing” of the cylinder walls with extended use. After several years of intensive research, we have documented that the use of synthetic 2T oils will in fact cause the cylinder walls to “glaze over” and cause “blow-by” at the piston rings eventually resulting in a power loss. "





RE: "synthetic" oil causing two stroke cylnder "glazing" ?
Mike Halloran
Pembroke Pines, FL, USA
RE: "synthetic" oil causing two stroke cylnder "glazing" ?
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: "synthetic" oil causing two stroke cylnder "glazing" ?
"Bombardier requires that an API-TC oil be used in their engines" and cite why. "Rotax marine engines evolved from their very successful snowmobile and motorcycle racing designs. These engines produce more power/cc than any other PWC manufacturer’s engine. Rotax designs these engines to work harder and run hotter than other brands. They simply need more protection than TCW3 oils can give."
http://www.sea-doo.net/techarticles/oil/oil.htm
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The oil that Legend Performance (authors of synthetic = glazing report) offers with a non W TC rating is ZX-2SR. Apparently it takes at least a dollup of Castor bean to do it, as they say it has a "distinctive “Racing Castor” scent."
I think for my poorly ridden vintage air cooled off road bikes I'll stick with TC rated Golden Spectro blend.
http://www.spectro-oils.com/wp-content/techsheets/...
Although in a desperate attempt to re-live my "glory days" I've begun a search for a local source for Blendzall just for the exhaust aroma therapy. The Yamaha Yamalube racing 2 stroke oil does not mention castor any more.
RE: "synthetic" oil causing two stroke cylnder "glazing" ?
From a technical perspective, what is marketed as "syntehtic" for 2-strokes can describe formulations put together with polyisobutlyenes and/or a whole variety of syntetic esters, each of which has vastly different chemical and physical properties. And as alluded above, the claim seems unlimited by application or duty cycle. Seems pretty vague. Not sure what TCW-3 vs. API TC has to do with it either. Is there a question here, or just an observation that folks say all sorts of things to sell lubricants?
Castor oil has good lubricity, but I suspect if used in effective concentrations it may carry a significant ring-sticking debit that could preclude it from passing the more stringent 2T engine test specifications.
RE: "synthetic" oil causing two stroke cylnder "glazing" ?
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: "synthetic" oil causing two stroke cylnder "glazing" ?
"The PIB is part of the man-made synthetic molecular structure that inhibits ring seal on engine “break-in” and leads to glazing of the cylinder walls. The reason for this lies in the fact that some of the synthetic molecules “high molecular weight” and chemical compounds (sulfur) cannot combust completely and thereby leave a residue on the cylinder wall."
Well, if you look at most any product data sheet, brightstock is loaded with sulfur, whereas PIB and esters have little if any. Next they ascribe solvent content to driving up formulation cost, which is also backwards. There's 2 factual errors right off the bat- take the claims for what they're worth.
RE: "synthetic" oil causing two stroke cylnder "glazing" ?
RE: "synthetic" oil causing two stroke cylnder "glazing" ?