I forget which forum I usually post these in... :shrugs: Anyway, as I have been doing for every oil change, below are my oil test results for anyone interested.
Oil: Amsoil Signature Series 0W-30
Filter: Amsoil EA15K10, 98.7% 15 micron filter
About 6 months and 5,000 miles
Some notes: My fuel dilution problem is now undetected at less than 1%, which is great news. :wiggle: I have been shifting much later, and rarely ever driving with the RPMs below 2,000 anymore. Also taking off from a stop with my clutch by holding the RPMs at 2k as well (no more tractor noise with low RPMs)
Unfortunately my oxidation is shot to hell. I think I'll try what Lotus recommends: a 5w-40 weight oil (although my viscosity is actually the best it's ever been on this test).
I had also been experimenting with adding high quality 2 cycle oil to my gasoline every fill up since my last oil change, at a ratio of 160:1 to lubricate my top end and to see if it affected my fuel dilution. It may have, but it could be my delayed shifting too keeping the RPMs higher. I will experiment by continuing to drive this way, and now remove the 2 cycle oil variable. I'm also not sure if this is the cause of the manganese
. It did help the "tractor noise" at low RPMs though, it made the valve-train quieter.
As usual, any input is welcome and feel free to ask me any questions.