460 Coolant drain??
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Freshman User
Joined: Jul 2014
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460 Coolant drain??
Hi,
I just got a 1989 F250 4x4 with the 7.5l
The coolant looks nasty so i wanna replace it all...is there a drain on the block?
I drained the radiator and got about two gallons, and i understand that it holds around four??
Thanks
I just got a 1989 F250 4x4 with the 7.5l
The coolant looks nasty so i wanna replace it all...is there a drain on the block?
I drained the radiator and got about two gallons, and i understand that it holds around four??
Thanks
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Yea the 460 has block drains (351 has em too), one each side of the motor.
Right side its just behind the motor mount, left side too but IIRC it is just a little bit farther back then the one on the right side.
Look like square head pipe plugs.....well they are pipe plugs and they tend to be brass from the factory but not sure if that is always the case.
Right side its just behind the motor mount, left side too but IIRC it is just a little bit farther back then the one on the right side.
Look like square head pipe plugs.....well they are pipe plugs and they tend to be brass from the factory but not sure if that is always the case.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
Yea the 460 has block drains (351 has em too), one each side of the motor.
Right side its just behind the motor mount, left side too but IIRC it is just a little bit farther back then the one on the right side.
Look like square head pipe plugs.....well they are pipe plugs and they tend to be brass from the factory but not sure if that is always the case.
Right side its just behind the motor mount, left side too but IIRC it is just a little bit farther back then the one on the right side.
Look like square head pipe plugs.....well they are pipe plugs and they tend to be brass from the factory but not sure if that is always the case.
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The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
The radiator has a drain plug, taking the block plugs out might cause leaks later, they're probably rusted-shut also.
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Laughing Gas
Joined: Mar 2014
Posts: 1,092
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I just did the reverse flush using the method described in link below. Worked great. I, too, would be worried about block leaks after removing block drains.
Cap-A-Radiator
Cap-A-Radiator
Lead Driver
Joined: Nov 2002
Posts: 9,556
Likes: 43
From: Concord, NC
I pull the block drain plugs every time I change the coolant. It's a simple tapered pipe plug - put a little pipe sealant on each one when you reinstall them. I'm not sure what the concern is with leaks.
Laughing Gas
Joined: Aug 2002
Posts: 1,069
Likes: 19
From: Central Wisconsin
It seems you'll always get some real crappy junk out of the block drains that you will never get out with simply draining the radiator… often you'll need to clean out the sludge with a sharp object before the coolant will drain.
New User
Joined: Jul 2020
Posts: 23
Likes: 1
I just did the reverse flush using the method described in link below. Worked great. I, too, would be worried about block leaks after removing block drains.
Cap-A-Radiator
Cap-A-Radiator
https://telegra.ph/HOW-TO-PROPERLY-R...G-SYSTEM-08-09
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