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TCM has a service bulletin SIL99-2A that specifies the oil to use in all of their engines. For the C-85 and O-200 it calls for 50 weight oil. Older versions of this bulletin called for 40 weight oil. Can't locate my copy of the bulletin to verify this but recently went over it at the FBO where I changed oil in my 150H engine and noted the change. My AI recommended that I continue to use the 40 wt. oil.
Rich Blair N99997 & N23287 Kingsland, Ga. ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm
