Grit dog
Full Access Member
- Joined
- May 18, 2020
- Posts
- 6,966
- Reaction score
- 12,215
- Location
- Auburn, Washington
- First Name
- Todd
- Truck Year
- 1986, 1977
- Truck Model
- K20, C10
- Engine Size
- 454, 350
If it’s operating fine then absolutely change it. Sounds like a good truck if it’s never been apart and still is truckin.
If you don’t pump it out the cooler lines to get the majority of old out, I’d get a pan with a drain plug and change it about 4x depending how much comes out. That’ll effectively replace about 90% of it.
If you don’t pump it out the cooler lines to get the majority of old out, I’d get a pan with a drain plug and change it about 4x depending how much comes out. That’ll effectively replace about 90% of it.
