Hello all, this is my first time doing a UOA and I decided to start with my part time daily driver 2005 Honda Civic with the 1.7L VTEC engine and 5 speed manual transmission. I'm not sure of the mileage on the engine since it is a replacement from Japan, but the Amsoil Signature Series 5W-20 and OEM Honda filter has been in use for about 12 months and 6251 miles at the time I took the sample. Most of those miles were cruising on rural roads and interstates on 10-25+ mile trips, it just took me roughly a year to put those miles on it because I have several other cars that I also drive.
I think the high high silicon was likely caused by the Hondabond I used to re seal the oil pump, pan, and valve cover gasket when I changed the timing belt and oil pump O ring in late 2022, so I'm not overly concerned about that for now. The copper and aluminum I'm not sure about, but I don't think it's too concerning?
The oil seems to have held up well judging by the viscosity and it doesn't appear that there's any coolant, moisture, or fuel dilution to speak of. The 450 degree flash point seems quite a bit higher than average, possibly because I rarely idle or take short trips and don't usually shut the engine off before the oil temp is 175+ degrees.
Anyways, just thought I'd share the results of my first ever UOA. I'm really looking forward to hearing your thoughts and feedback as always!
I think the high high silicon was likely caused by the Hondabond I used to re seal the oil pump, pan, and valve cover gasket when I changed the timing belt and oil pump O ring in late 2022, so I'm not overly concerned about that for now. The copper and aluminum I'm not sure about, but I don't think it's too concerning?
The oil seems to have held up well judging by the viscosity and it doesn't appear that there's any coolant, moisture, or fuel dilution to speak of. The 450 degree flash point seems quite a bit higher than average, possibly because I rarely idle or take short trips and don't usually shut the engine off before the oil temp is 175+ degrees.
Anyways, just thought I'd share the results of my first ever UOA. I'm really looking forward to hearing your thoughts and feedback as always!