Onan Microquiet 4000 Oil Analysis
Did an oil change on the Onan Microquiet 4000 and sent in an oil sample for analysis. Got the result back and looks good. Iron is a little higher than average, the average duration is 100 hrs. and I...
Forum Discussion
In my 2000 Class A I had Amsoil and a bypass filter system installed at 6k. I had oil samples at each 7500 miles thereafter. The lab recommended oil change after I reached 35000. I switched to Mobil 1 5/20 at that time. I changed the bypass filter each 25k miles and the base filter with each 7500 mile sample. All change recommendations after that came at 35-45k miles on the oil. Lots of perfectly good oil being tossed. Note, that the results may have been different without a bypass filter.
At 127k miles the V-10 spit a plug. Had to have the heads pulled to fix. No measurable wear on cams or valve stems. Did have the valves polished. Compression was in the range of a new engine after reassembly.
In motor home use the V10 should easily run 300-500k. Probably outlast the servicability of the house part. Tranny is the weakest link in the drive train.
At 127k miles the V-10 spit a plug. Had to have the heads pulled to fix. No measurable wear on cams or valve stems. Did have the valves polished. Compression was in the range of a new engine after reassembly.
In motor home use the V10 should easily run 300-500k. Probably outlast the servicability of the house part. Tranny is the weakest link in the drive train.
