Test results of small engine oil analysis on a Honda 190cc lawn mower engine. The oil has not been changed for over 4 years so I decided to send the old oil to a lab for analysis.

0:00 Intro about small engine
0:15 Engine oil sample being taken
0:27 Info about Blackstone Labs oil analysis service
0:38 Test Results: Aluminum and Copper
1:09 Molybdenum
1:22 Boron
1:32 Silicon
1:50 Thinner oil due to oil shearing
2:15 Fuel Dilution
2:25 Total Base Number (TBN)
2:43 Oil change recommendation and engine hour timer
3:08 Conclusion