What anti-gelling fuel supplement works best for an older 7.3 diesel?

Discussion
1

I recently bought a 97 F250, but it didn’t come with a manual. I’m wondering which anti-gelling fuel supplement would be the best for an older 7.3 diesel engine.

2

I use Howes, but everyone has their own favorite. Never had an issue, even living in northern Colorado/Wyoming where temperatures drop below 20°F regularly during the winter.

3

Reagan said:
I use Howes, but everyone has their own favorite. Never had an issue, even living in northern Colorado/Wyoming where temperatures drop below 20°F regularly during the winter.

I’m from southeastern South Dakota, so I’m used to the cold winters. But this is my first diesel truck, so I’m just figuring things out.

4

@Zach
Hey, Sioux Falls here! Nice to see someone from the area.

5

@Zach
Yeah, it’s a learning process for sure! I’ve been using Howes since a friend, who’s built a lot of 7.3s, recommended it. I’m also an ex-mechanic, so I trust it.

6

I’ve had good luck with Power Service in the white bottle. It’s easy to find locally and while traveling.

7

I’m in Alaska and I own a 6.0. I’ve been really happy with the ArchOil products for fuel treatment.

8

I haven’t heard much debate about which anti-gel is the best, but I live in a warm area, so it’s not much of an issue for me. I was curious though—does anyone use those electric heaters that wrap around the fuel filter? I figure since a small amount of fuel is in the filter, it might be more likely to form wax crystals.