I have an 04' f-250 sd psd. I would like to flush the system but am confused about exactly where the drain is for the radiator. I'm used to seeing a petcock. Any help? Thanks.

 

flip418, if you post this in the diesel section under your year, I'm sure someone will be able to help you.

 

Plastic or nylon drain plugs are usually located in the bottom left or right corners of your radiator. Simply turn counter-clockwise to remove, and make sure you thread it straight out. This will protect the drain plug and radiator threads. Some Fords have a small O-ring as a seal, (on the plug) but I am not sure about a Ford diesel, as yours... Ed
PS On some Fords, the drain plug comes half way out, then it seems to get stuck. (Coolant will be coming out, but much slower than normal) Simply continue to thread it straight out, with a tiny bit of outward pressure on the drain plug. It will then come straight out, and be removed completely. The coolant will gush out, and then it's easy to flush the remainder of the radiator. If the engine is fully warmed up, then make sure the engine is running if you are flushing radiator with a hose. Turn on heater at full fan speed too.

 

Thanks guys....actually found it about 5 minutes after this post!

 

Good! Glad to here that, Flip418.

Check the "Help" line of aftermarket line at your local autoparts store. I like to have an extra drain plug just in case. They cost less than $5.

Like you, I was always used to a regular petcock on the radiator, no matter if it was a Ford, GM, Chrysler Corporation or AMC radiator. (Sometimes I wish they would have just continued using the common petcock!).