I find searching for the latest SI confusing. I believe the most recent oil type Rotax SI is SI-912-016R8, dated 16 Apr 2015, please correct me if there's one more recent. It appears to state that now the only oil Rotax recommends is Aeroshell Sport Plus 4, all other oils have been dropped. Is this correct? Am I missing anything?
You are correct Mark.
From prev post:
One major concern is the automotive oil manufactures can change the formulations without any warning. Sometimes the formulation changes do not work with our engines.
This has happened in 2002 with a resulting 3 in-flight engine failures and a FAA airworthiness directive (AD-02-21-16, now rescinded) As a result two oils were banned by rotax because they would not return to the oil tank properly. One of these oils was Motul 5100. its predecessor, Motul 3100, did not have this problem and it was our highest recommended oil.
Some other popular oils have changed the name of the product and the bottle color, does this mean the formulation has changed? How does Rotax get informed about this?
Aeroshell has guaranteed not to change the formula without consulting and testing with Rotax.
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