Rotax 912 Oil issues

[Nkwazi]

There seems to be some talk on the vine that we should not be using Aeroshell Sport 4. There have been a couple of engine failures which are being attributed to the use of this oil. See this extract of an article on the matter.

"A friend of ours sent in a question on oils, which was sparked by reading an internet discussion group story about “experimenting” with oils for Corvair flight engines. It is a free world and people can do as they wish, but to my perspective, the subject of oil for Corvair flight engines is very simple.
Below is a picture of Shell Rotella T 15W-40 oil. This is the oil that we suggest people use in their flight engines. I am going to guess that 90 percent of the hours logged on Corvairs last year were done with this oil. We have been using it since 1996, and I have had a very long time to examine the long-term wear characteristics, it’s ability to withstand heat, its compatibility with 100LL, and it anti corrosion characteristics. This oil is a winner on all fronts. Add to this, that it is available at any auto parts store or Wal-Mart and it is fairly cheap, and I begin to ask myself why anyone would be looking for another oil.
[cid:image002.jpg@01CEB08A.407ECBB0]<http://www.sensmeieroil.com/suppliers/quaker-state>
In the manual, I try to teach my saying, “It isn’t the probability of being right, it is the cost of being wrong.” Oil example: Years ago, Woody Harris, our west coast guy thinks that Aeroshell is airplane oil, and may be better for our “Airplane” application. He is pretty sure this has good promise. Here was the cost of being wrong in that instance: His engine ate the new cam and lifters in 1 hour of running on Aeroshell. This is because the element we care about, Zinc Phosphate is about 800 PPM in Rotella, about 200 PPM in normal oil, and ZERO PPM in Aeroshell.
Let’s say you have always used imaginary Dyno-syn 10-40 in every car you have had in the last 10 years with great luck. It doesn’t count: Modern cars have roller cams, and don’t need zinc. Lets say you have used Unicorn 20w-50 in all your cars for the last 30 years, and all your cars were Corvairs. It doesn’t count: You didn’t run your cars on leaded fuel, and this matters. I could go on like this for a while, but you get the point. Any recommendation has to be just about what we do with Corvairs."

Any thoughts gents.

[KFA]

Be careful. Don't just believe everything. Remember the Corvair engine is aircooled and the oil requirements are different than that for a Rorax engine. Just saying...

[Turbo]

The original,oil,developed for Rotax 4stroke engines was silkolene made by Fuchs, Ouse the very same oil in PRO4 format today and have no issues what so ever.

The API rating designed for Rptax engines was SG, which was discontinued in 1996 - the latest PRO4 silkolene product is still rated API SG and used in race bikes, for the reason that the gears inside the reduction drive share the engines oil, like a race bikes engine.

Fuchs are situated next door to my main warehouse, and public are able to purchase oils directly, R791.00 for 10 x 1litre bottles.