Our weensie BX1800 Kubota uses GPs but the 2040 Deere doesn't...the Deere is a DI engine and it will roll over and start in sub-20F temps no prob. The Komatsu dozer has GPs but at any temp above 55 it doesn't need em...below that it has to have them and smokes like a fiend until it warms up a bit...30 sec of running or so.

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Never a dull moment at Berry Hill Farm.