JDgreen
Lawn Addict
- Joined
- May 14, 2010
- Threads
- 248
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- 2,887
The part I don't understand is why would you want 10W30 over 10W40. Do you mow grass in Scotland when it is real cold and need the lighter oil? The 10 is when the mower is first started and the oil is cold and the high number 30 and 40 after everything is up to operating temperature.
Practically every walk behind push mower I have owned says "do not use 10W40 oil" in their manuals.