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International Automotive Technicians Network
Re: Fuel efficency
Posted to Technical Theory Forum on 3/5/2023 2 Replies

Hi Mark,

The proper working thermostat is vital for the best possible mileage. I recall back in the 70's when my uncles would change thermostats depending on the season. Typically, they would use a higher temp in the Winter and a lower temp in the Summer. Of... Login to read more.

2 Replies Received (View Replies)