2008 Craftsman Pro, Briggs & Stratton 24 HP, 37.9 Hours UOA. This is a "Lawn/Yard Tractor" or "Riding Mower" (I sit down on it and mow grass). My Notes show I've run this since 4-20-2020 so that would make it 3 years & 4 months in use. I put in 1qt Oreilly's, 1qt Mobil 10w30 FS & Fram XG3614 during this interval. You can find that Fram Ultra "OG" filter here. https://bobistheoilguy.com/xg3614
Anyways, This Craftsman is showing much lower wear than my John Deere garden tractor that had an engine knock.
Now it may seem a little silly but I looked at x4 UOA on my F-350 since it also has an hour meter I can "compare" it to this 37.9 hours. The F-350 averaged 0.154353104405 PPM Fe per 1 hour of drive time. This Crafstman Pro averaged 0.369393139842 PPM Fe on this sample. So, the lawn tractor had 82.1161% additional Fe wear than the 6.0L Diesel. Just playing around with numbers.
I called the lab before I sent this sample in & the lady seemed intrigued about doing a UOA on a riding mower. I noticed they did an additional "Cap Test" & shows a picture of the cap on the second page. Not certain what its about other then looking at it under a microscope to see any metal perhaps? I also just realized that the small amount of Titanium showing up was from a few oil changes back when I used Phillips66 Semi-Synthetic oil in this mower.
"Dirt Entry" comment on the UOA was most likely due to Si being at 25 ppm that labs consider it's time to replace the oil. Fuel dilution came in at 3.3484% & was done via GC method per my request. This mower works when it's called upon. I often mow two weeks worth of grass & mow the opposite of how you're supposed to (I discharge towards uncut grass, to "mulch mow" as I call it). Without further ado...here's the UOA.
Anyways, This Craftsman is showing much lower wear than my John Deere garden tractor that had an engine knock.
Now it may seem a little silly but I looked at x4 UOA on my F-350 since it also has an hour meter I can "compare" it to this 37.9 hours. The F-350 averaged 0.154353104405 PPM Fe per 1 hour of drive time. This Crafstman Pro averaged 0.369393139842 PPM Fe on this sample. So, the lawn tractor had 82.1161% additional Fe wear than the 6.0L Diesel. Just playing around with numbers.
I called the lab before I sent this sample in & the lady seemed intrigued about doing a UOA on a riding mower. I noticed they did an additional "Cap Test" & shows a picture of the cap on the second page. Not certain what its about other then looking at it under a microscope to see any metal perhaps? I also just realized that the small amount of Titanium showing up was from a few oil changes back when I used Phillips66 Semi-Synthetic oil in this mower.
"Dirt Entry" comment on the UOA was most likely due to Si being at 25 ppm that labs consider it's time to replace the oil. Fuel dilution came in at 3.3484% & was done via GC method per my request. This mower works when it's called upon. I often mow two weeks worth of grass & mow the opposite of how you're supposed to (I discharge towards uncut grass, to "mulch mow" as I call it). Without further ado...here's the UOA.
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