Actually something CAN happen. Basicly the dispersent package used in aviation 4-cycle oil and your typical TCW-3 oil are completely different. Under the right conditions certain dispersent packages can react and actually gel. Not all oils have these additives, however you as the consumer will never know whats actually in your oil, and so the safer bet is to not gamble.
Marty, there is a BIG difference between MMO and typical 2 cycle oil, not even close to the same chemistry. Care to explain why you seem to have this hostility towards a simple petroleum product? Marketing will always tend to go "over the edge" when selling a product, however if you know what the product contains, and what those ingredients are good for reguarding a particular application, you can weed through the BS and use sound logic. I do know what MMO is, both from supplied information from the manufacturer, and testing in our own lab at work. Believe it or not, even pure mineral oil cleans intake valves and combustion chamber deposits as it acts as a scavenger. So you have your clean mineral oil, some solvents the specificly loosen up oxidized petroleum residues ( varnish ), TCP as an anti-scuff and lead scavenger ( although really too low in concentration to scavenge much lead ), and a little dye. Ok, from an engine designers and tribologists perspective, all good things.....so whats the deal?
No hostility Aaron. Also not gullible and have no hope and faith (all required for one to be a believer) that MMO is a cure-all miracle product as claimed in testimonials.
Last edited by rosiejerryrosie; 04-03-2012 at 07:47 AM.
Cheers,
Jerry
NC22375
65LA out of 07N Pennsylvania
Marty,
Thats why I said that you need to weed through the marketing BS, and see what a product is from a fundamental engineering perspective. Same line of thought goes for lubricants, engines, airframes, avionics, welding technology, paints, glues, etc. SO what I am saying is, purely from an engine designers perspective, there are positive attributes to the chemicals in MMO for certain applications. Do I like all the hype? No, I work in engineering, not marketing. However I wont discredit the engineering attributes of something, just because of overzelous marketing.
This is a very valid point, and the reason we use a non "D" oil in engines that do not have filtration. we want the sludge to stay at the bottom of the sump. and remember the "D" is not for detergent, it is for dispersant it does not clean your engine it only prevents slugging, and allows the oil to carry the yuck to the filter.
That's pretty far fetched, seeing as the 2 cycle oil and mineral oil can be blended together and run in a 2 cycle engine, plus the new 2 cycle oils are a lipid oil and thus a synthetic, and there are semisynthetic oils on the market in aviation.
There is a way to find out, simply put the two in a glass jar shake it up sand see what happens when you heat it to the temps we see in our engine oil. I believe nothing will change except the viscosity.
OBTW, there are no dispersant package in 2 cycle oil that is meant to be burned.
Last edited by Tom Downey; 04-03-2012 at 09:15 AM.
Hi Tom,
Actually there are dispersents as well as detergents. As far as being "far fetched", well its a rare set of circumstances that it can happen, however it has, which is what prompted the investigation. Is it likely, no. BTW where did you get lipids from in 2 cycle oil??????
OFF the label of the gallon I just bought.
you need to read "OIL TALK FOR DUMMIES" at
http://www.eci.aero/pdf/BreakInInstructions.pdf
There are no detergents allowed in Aviation oil. and 2 cycle oil has none because of the metallic additives are not allowed to be burned. It's a EPA thing.
Please site your reference
Last edited by Tom Downey; 04-03-2012 at 12:49 PM.