I had a conversation with Lycoming tech support today, mostly about my engine case which started life as a TIO-540, but will now live on as a 540-X. But while talking, I learned that they're coming out with an updated SI 1125 (should be revision E, but not certain) that will replace the no-longer-available Perfect Seal POB #4 with Permatex 80017, making it official.
My guess is that is what folks have been using for years already, (that and Hylomar blue), but thought I'd pass that on for anyone who may be searching on the topic.
My guess is that is what folks have been using for years already, (that and Hylomar blue), but thought I'd pass that on for anyone who may be searching on the topic.