Os .46 La (Full Version)

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Cessna26 -> Os .46 La (6/16/2003 7:07:13 AM)

I am going to get an OS .46 LA engine for my Avistar. What kind of fuel should I use for it?



downunder-RCU -> Os .46 La (6/16/2003 9:48:57 AM)

If you want it to last a very long time then use 22% all castor. This is for proper lubrication of the plain bearing. Nitro content is up to you but 5% should be sufficient.



MECHANIC -> Os .46 La (6/16/2003 5:45:18 PM)

I have run a lot of 46LA's. I also work on them. DOWNUNDER is correct. You need mostly castor oil to get good life out of these engines. I have found that SIG 5%NITRO-20%CASTOR with 4 ounces of KLOTZ added per gallon makes a good fuel. This gives 23% total oil. The KLOTZ seems to keep the engine cleaner inside. Never run the engine too lean. Always back it off rich a few hundred RPM. I think that the engines with peeled nickle liners are usually abused by being set too lean without enough oil. This is my two-bits worth.

Regards, Duane



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