Quote:
Originally Posted by AndyIsRiding
Is this a BRP Dealer?
They should know better.
BRP Rotax all engines are recommended to use Synthetic oil.
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Any engine for a varying period of time requires a parasynthetic or normal hydrocarbon oil to break-in things and mostly seat the rings in the bores properly so it runs at full efficiancy. I see all you guys running out at the first oil change and switching to a full synthetic oil and I can't help but wonder how much of the power and efficiency you are missing during your engine and transmissions lifetimes.
Yes it may run cooler and get better gas mileage and you will think what a wonderfull thing I have done but you will be missing what it would have had if you waited till breaking-in was complete. If they say run the parasynthetic for 10,000 miles then run it and switch over to full synthetic after that. I have often seen things to prove this on the dyno in even full race engines which generally are made to looser tolerences and don't really need much break-in time at all. Generally just dyno time is enough and they are ready to go racing.
You will notice an increase in MPG and maybe even lower temperature in the engine (make allowances for the current heat wave we are having) and if you are really sharp the way the engine pulls on hills and under maybe acceleration load. That is the sign it might be getting ready for synthetics. Before that time it is a waste of money (the dang BuRP Parasynthetic costs enough) and may be a limiter to your general overall broke in and ready to go efficiency and power levels later in life of the engine.
I made my living as a lubrication specialist and field mechanic trouble shooter for 35 years for DuPont while racing for almost 30 years and maintaining my own equipment. I have learned to be both cheap and accurate on oils and maintnance. One thing about BuRP's maintanance schedule jumped right out at me first thing and that is 3,000 mile oil change intervals. That does not allow enough time with one charge of oil to facilitate a great amount of break-in time when one considers just the engine. However we are also using this oil in the transmission and that may be the major reason for the 3,000 mile interval. I know from Dupont's tests with oils that 4,000 miles with just hydrocarbon oils is a relatively safe interval so a parasynthetic should be safe even farther. Knowing this and recommending it are two different things but with now over 7,000 miles on the 2010 RT I now own, I am seeing things turn a bit faster and stronger and MPG is finally improving a bit too.
I am not a great believer in synthetic oils mainly because of the costs of them but when BuRP charges $9 or more a quart that synthetic looks much better to me. If you keep in mind the simple fact that synthetics work so good that they effectively eliminate wear and break-in seating maybe these facts will be easier to swallow. If you disagree that is you right but these facts have been learned by a now 67 year old man and all the hard way. Bill