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Don't know why....Cooled fuel was supposed to give more power............Maybe for fuel economy, but cant see how that would help.
 

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Lost in the 60's
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Yep...some diesels have them....some have glow plugs. Diesels need a little help sometimes when its cold. You have to remember....there are no spark plugs....diesels ignite by the heat from compression......so when its cold you got to warm that air and fuel a little. :thumbup:
 
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