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This is my CRF450L 600 mile oil sample. Honda recommends changing the oil every 600 miles. That oil don't need changing.

This is a 72 hour sample from my 18 Camry 2.5 with 10,000 miles on its oil of daily driving of less than 20 miles. 0w 20 Mobil one. This oil is in good shape no center ring or dark areas. There is some fuel dilution. Probably due to it being dual injection and the short trips This sample was...

This is a 72 hour sample from my 18 Camry 2.5 with 9000 miles on its oil of daily driving of less than 20 miles. 0w 20 Mobil one. This oil is in good shape no center ring or dark areas. There is some fuel dilution. Probably due to it being dual injection and the short trips This sample was taken...

Thanks for the welcome! I took a bamboo skewer and stuck it down the oil fill past the clutch.

Thanks KG! This is the 72 hour test of a oil sample from my 2018 Yamaha MT 07. Oil was last changed on 8-31-2019 with Rotella T4 15w40. Current miles on the oil 2281. Ride time is always at least 30 mins or more with most rides less than 40 miles. The oil looks great considering its age and...

I recently learned about the blotter spot test for evaluating oil for quality. This sample is from my 2000 Z71 5.3 that is driven maybe 2000 miles per year with short 10 to 15 mile trips to town. Even less than that over the past year. I think the oil is 3 years old. It is Mobil one 5w 30...