I'm happy with this report...Iron is now down to a reasonable level. All I did was I installed a magnetic drain plug at the beginning of this UOA. The old drain plug was NOT magnetic.
The next step is to tackle the high silicon. I know it's not an additive from the Gear Lube - A VOA as well as many UOAs I have performed on other units using the same lube don't show anywhere near this level of Silicon. I doubt it is from sealers, as I would think by now the Silicon level would have significantly declined by now. I am wondering if there is a breathing tube or some vent that dirt is getting into. I will examine the shop manual and see; I haven't noticed one while servicing this unit, but I am not sure what to look for either. Comments?
The next step is to tackle the high silicon. I know it's not an additive from the Gear Lube - A VOA as well as many UOAs I have performed on other units using the same lube don't show anywhere near this level of Silicon. I doubt it is from sealers, as I would think by now the Silicon level would have significantly declined by now. I am wondering if there is a breathing tube or some vent that dirt is getting into. I will examine the shop manual and see; I haven't noticed one while servicing this unit, but I am not sure what to look for either. Comments?