David-aviator
Well Known Member
Lycoming issued Service Instruction 1409C last February.
http://www.lycoming.com/support/publications/service-instructions/pdfs/SI1409C.pdf
This instruction has to do with the use of LW-16702, the stuff that came out years ago in the form of an AD on the 0320 H series of engines. If I read the February publication correctly, Lycoming now recommends LW-16702 for all Lycomng engines except those with a "friction type clutch", whatever that is.
It appears that Aeroshell 15W-50 has LW-16702 in it, but Phillips 66 X/C 20W-50 does not which means one should add a can of LW-16702 with the Phillips product. Am I correct in this assessment? Phillips 66 Type 100 AW oil has the additive but it is a single grade 50 weight oil.
Years ago I used Avblend but no LW-16702 (they cost about the same). How many guys are using either, or NONE?
I'd do a survey but I have not learned how.
http://www.lycoming.com/support/publications/service-instructions/pdfs/SI1409C.pdf
This instruction has to do with the use of LW-16702, the stuff that came out years ago in the form of an AD on the 0320 H series of engines. If I read the February publication correctly, Lycoming now recommends LW-16702 for all Lycomng engines except those with a "friction type clutch", whatever that is.
It appears that Aeroshell 15W-50 has LW-16702 in it, but Phillips 66 X/C 20W-50 does not which means one should add a can of LW-16702 with the Phillips product. Am I correct in this assessment? Phillips 66 Type 100 AW oil has the additive but it is a single grade 50 weight oil.
Years ago I used Avblend but no LW-16702 (they cost about the same). How many guys are using either, or NONE?
I'd do a survey but I have not learned how.