Just wondering, on the 4 stroke small engines i.e. lawnmowers, chainsaws (I didn't know 4 stroke chainsaws existed?), etc, do you still need to mix oil into the gas, or do they have an oil pan? Also, on the 4 stroke chainsaws, how did they make it so that the oil didn't go all over the place (i.e. away from the sump) whenever the engine is at an angle?

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2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
Spark-free since 1999