The R277 was broken-in with mineral 2-stroke oil. I'm about to used synthetic oil. Available stuff is the HP MARINE from AMSOIL. What are your thoughts if this being used on aircooledl engine? Thanks again. Regards, Phil
I don't pretend to be an authority on oil by any means, but I've heard to not use TC-W3 type oil for air cooled engines. It does say "marine" on the bottle pictured and I expect one difference would be that a water cooled engine would not see as wide a fluctuation in temps as a air cooled engine would/could experience.
Phil I believe Lynn is correct. The air cooled two stroke engines run much hotter than a two stroke water cooled engine, and needs an oil designed for that. Here is a link for a Rotax Service instruction regarding the lubricants of their two stroke engines: https://legacy.rotaxowner.com/si_tb_info/serviceinfo/si-2st-008.pdf I made a screenshot og the oil section.
Thank you for the very important info. The Castrol Activ (Mineral 2T oil) used on my break-in. There's no available market for Castrol Synthetic 2T in our country.
Got the Motul 2T Synthetic made in france I imported from Spain. It has API TC-JASO FD-ISO-L-EGO. Is this adequate for intended used?
Thank you for the very important info. The Castrol Activ (Mineral 2T oil) used on my break-in. There's no available market for Castrol Synthetic 2T in our country.
Got the Motul 2T Synthetic made in france I imported from Spain. It has API TC-JASO FD-ISO-L-EGO. Is this adequate for intended used?
Phil
I don't know the Motul oil brand, but it seems to be produced to API TC standard, which is what Rotax recommends. And according to the data here: https://d23zpyj32c5wn3.cloudfr.....GB_29.pdf?1492017625 it is recommended for "Any high performance 2 stroke bikes, sports bikes, replicas, trails, off road bikes, enduro, mopeds, fitted with high performance 2 stroke engines, running at high rpm in severe conditions" From what I see, it should be OK to use.
In the UK we've always been told that for air-cooled 2 strokes it's best to use a semi-synthetic oil rather than a fully synthetic oil. This is because semi-synthetic oil sticks to the insides of the engine when you turn it off, so helps to keep the bearings coated in oil. Fully synthetic oil will drain off the bearings very quickly, so will not keep the bearing surfaces coated and therefore protected against rust.
Our planes are not normally flown every day, but infrequently, i.e. once or twice per week in the summer, and perhaps once a month during the winter months, so it's important to keep the bearings coated for as long as possible to keep the dreaded rust away from the rollers and their races.
I just went on Ebay.com (the US version of Ebay) and found the following advert for a gallon of Lucas semi-synthetic oil. It seems to meet all the relevant standards, and I'd be happy to put something like it in my Rotax 447.
By the way, I have nothing whatsoever to do with any oil company, but looking on an American website there weren't many suppliers of semi-synthetic oil that originated in the US, and the Lucas oil was one of only two suppliers of home grown American 2 stroke oil. All the others listed were either from the UK or from Australia.
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I second Bob's comment, I've used all sorts over the years but these days I use Rock Oil semi-synthetic (Chain saw oil). Just think of how chain saws are abused, left with stale fuel in them for months etc.!
I would avoid the expense and hype of AMSOIL and stay with the ROTAX recommendations. In the past I have always used Pennzoil Air-cooled 2-strock oil but it is almost impossible to find anymore. At the local airport, K34, two pilots used it exclusively and had well over 1000 hours on there 447's. I now use the Walmart Super Tech Synthetic 2-cycle Engine Oil (silver label) with no problems on my 447.
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Phil, regarding your opening statement and photo of the Amsoil Marine 2-stroke oil. My local dealer does not recommend that product for an air cooled engine due to the higher variable temperatures this type of engine runs at. If you use the Amsoil product, he recommends Amsoil Saber Professional 2-stroke oil.
Leon Massa, owner & engine builder of the late great Compact Rotary Engines who made my MZ202 engine, strongly recommends Castrol TTS. Says he has never had an engine returned with lubrication failure when used exclusively with TTS.
Phil, regarding your opening statement and photo of the Amsoil Marine 2-stroke oil. My local dealer does not recommend that product for an air cooled engine due to the higher variable temperatures this type of engine runs at. If you use the Amsoil product, he recommends Amsoil Saber Professional 2-stroke oil.
Paul Fiebich
Thanks, the Amsoil product mentioned 1:100 ratio to cut cost. Does it mean Rotax 2 stroker could be viable on this? Just curious.
If you live in a climate with humidity enough for rust and don't run your engine every day do "not" use 100% synthetic as it does not protect from rust!!! Use a semi-synthetic for high temp protection along with low temp cling for a climate barrier. Have researched this exstensively and found a blend is the best answer. I use a Lucas product and have had no lube problems
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