BF130 carbon treatment results

[trx125]

I just finished off the first carbon treatment in about 4 years. I replaced the head/head gasket in '17 after replacement and carbon treatment I had 209-207 psi across all cylinders. But every boating season since then it seemed as if the compression dropped off 5-7psi across all cylinders and last year it seemed to lose about 1/4 quart of oil every 2-3 tanks. Well, I started my yearly service and notice the compression was down to 180-179-181-175 and that had me concerned. So, I did a carbon treatment consisting of 1/3 bottle FI cleaner and 1/2 bottle of Seafoam into a gal of gas. I ran the engine at varying rpms up and down between idle and 5k for about five minutes each until I used the fuel treatment up. I immediately pulled the plugs and checked compression and now have 195-192-194-194. I plan to run a bottle of ring free in my first tank of gas and see is that will help with the slight oil loss I am having. Any thoughts or comments appreciated.

 

[jgmo]

Well, if you had asked me before doing that, I would have said that was a pretty "aggressive" treatment. But your results say it may have been "just right". Impressive!
That's MY opinion anyway.