Looks like there is a huge difference in small engine life between engines with and without oil filters.
Looks like engines with oil filters last about 8x longer.
https://www.machinerylubrication.com...ose-oil-filter
Searching lawn mower life expectancy for cheap consumer engines is around 400 to 800hrs.
Commercial engines with oil filters are looking at 5,000 to 7,000hours.
If the engine costs $500 and lasts 500hrs and oil costs $10 for one quart that gets changed ever 20 hours that's a cost of up to $1.50 an hour.
If the engine lasts 5,000hrs and change 2qts of oil and a filter for $35 every 100hrs that's 45 cents an hour.
Probably what I'll do is change the oil every 100 to 200hrs and change the filter when it gets close to 20psi filter delta p and who knows how long that will take.
If the engine puts a gram of dirt, soot, metal in the oil every 40hrs it's going to take at least 400hrs to start clogging up the filter.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
Last edited by oil pan 4; 09-21-2023 at 04:22 PM..
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