Doug Davis wrote: > > Has anyone on the list experimented with synthetics to lower oil temp? I > understand that some are approved, including Amsoil. Pure synthetics have > no crude oil base or paraffin, to crystallize behind your rings when temps > go the the 200 degree mark. They reduce and in some cases nearly eliminate > friction (heat). Plus the way most of us fly, the aircraft can sit for long > periods of time without the need of an oil change, or "pickling". Up to > one year without a "dry start". I've tried it in the family car and in our > "greyhound" type bus motorhome conversion, with astounding results. 25% > increase in power and fuel mileage, and have just changed the oil ( the > first in three years and 30 thousand miles). My oil analysis still showed a > TBN rating of over 13 points,( thats the lubricity rating) My former > ratings on the petroleum products were at the 4-5 point level after 5000, > miles. I really didn't have to change, according to the reports, but I '' > chickened out". The only problem I have, is that in the fall and winter my > engines run too cool for proper combustion,critical in a diesel. Aircraft > turbines cannot run without synthetics. Should tell us something--eh? > Doug > P.S. you've got me thinking. I'm calling Amsoill in the morning to see what > they say. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Hooo boy. Pray tell, just how did you measure this 25% INCREASE IN POWER? Do you really want to leave oil in your aircraft for 3 years? Lubricity is just ONE aspect of oil. There are a heap of others thing going on that you need protection FOR and FROM in an aircraft environment.... and I ain't even a QUALIFIED chemist or lubrication engineer. Let is be said that one would think Shell, Phillips and Exxon would know a tad more than most any Ercoupe owner about oil engineering. Call the FAA and Continental Engines and get their input too. They have no compelling interest in selling oil products. You can and better use AVIATION approved synthetics in a certified aircraft. Areoshell comes to mind, BUT they are the first to say, if your going to let an engine sit... corrosion will be a problem with their synthetic BLEND. This should tell us something.... and at $5.00 a quart too. At a quart every three hours, I just gotta pass it up. My engine has been running for 53 years on a PROVEN PRODUCT. BTW... I ran Amsoil synthetic gear lube in my Madza transmission years ago. Had to have it rebuilt after 3 years. Co-incidence? Maybe. Maybe not. Used their engine oil too for 30,000 without an oil change too. Started burning oil at that point. Co-incidence? Maybe. Maybe not. Bob Urban
<<attachment: winmail.dat>>
