Keep in mind, unlike a gas engine, our coaches send more fuel to the engine than it can use. The unused fuel is then sent back to the tank. This is constantly going on, so while driving, your fuel is being heated.
We live in California, so we only occasionally get into cold weather, but nothing lower than 25 degrees. With that said, I run an additive with EVERY fill up. I use Opti Lube. The purpose of the additive is to add cetane and boost lubricity. Studies have shown that fuel collected and tested around the country has occasionally come up short of the Government's lubricity standards. For the same reason, Cummins announced about two years ago that everyone should be using an additive. In their announcement, they suggest using their brand.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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