[quote=J415;2072267]Yeah, we do. I have a 5.2 block. So I guess we just figured out that the 5.2 block takes two 1 5/8 plugs and the 5.9 block takes one 1 5/8 plug and one 1 1/4 plug. Sounds good. This should be in the FAQ page.

So, everyone is in agreeance that I need one 1 5/8 and one 1 1/4 freeze plug, since I have the 5.9? Dealer**** didnt know what the hell I was talking about...hell, they even brought up a pic and asked if the rear main seal was what I needed...

Thanks

 

Yes you need a 1 5/8 and an 1 1/4 for the ones on the back of the block if you have the 5.9

 

So, everyone is in agreeance that I need one 1 5/8 and one 1 1/4 freeze plug, since I have the 5.9? Dealer**** didnt know what the hell I was talking about...hell, they even brought up a pic and asked if the rear main seal was what I needed...

Thanks[/QUOTE]

Some auto parts stores call them freeze plugs and other call them expansion plugs. I would get 2-1 5/8 plugs and 2-1 1/4 plugs just in case you mess up. I messed up when I did mine. It didn't go in straight. So I took it out and put a new one in. I didn't wanna take any chances.

 

I feel your pain, I also have a freeze plug on the back of the block that's leaking, I've been way too busy to mess with it so I just dumped a tube of stop leak in it for now, it's actually working great so far.

 

++++10 why pull a trans unless there's just no other option.

 

I thought that stop leak was a no-no? I would much rather pull the tranny for a bad torque converter or a rebuild!! Whats the chance that if I keep driving around with a leaking freeze plug that they will completely pop out or corrode completely out?

THanks guys

 

there's a lot of undue concern over stop leak products. everyone assumes thats its like glue and will immediately stop up the radiator, heater core, thermostat, radiator hose, radiator cap, and block. first off, if it did, then nobody would continue to sell the products, because they'd be no satisfied customers and everybody would be suing them. the way all coolant stop leaks work is that they go into solution and swirl around inside the cooling system. while in solution, they do nothing. when they ooze out of a leak, and are subject to heat, air, etc, they solidify and guess what - seal up minor leaks. this is true of simple products like black pepper and egg as well as the modern high tech products using names like copper, aluminum, and/or glass.

there are no guarantees. the only guarantee is that it might work and it might save you a lot of trouble. if it doesn't work, then the corrosion will continue and it will continue to get worse. while it could advance from a minor leak to a major leak, its likely to occur gradually. it will never pop out. its a band-aid that might buy you a year or two or five. hopefully to some day in the future when you remove the engine or transmission for a major repair.

 

I've used stop-leak on domestic engines for years and never had any adverse effects.

However, some years ago, I had a Porsche with an oil cooler (oil is channeled in the middle of a mini radiator mounted to the block) that I used stop-leak on. When I rebuilt the engine, I noticed that 50% of the coolant passages in the oil cooler were completely clogged with stop-leak.

Moral of the lesson...if you have large coolant passages, stop-leak should not be a problem. Smaller coolant passage is a no-no!

BTW...if you use stop-leak it will tend to gather at the lower points of the circulation system which on the 5.9 is around the rear driver side freeze plug. I know this because when I replaced my freeze plugs on my 5.9, the area around the driver side plug was completed caked in stop-leak!!!!

2nd BTW...if you have to replace your rear block freeze plugs, you will have to remove the tranny, not just slide it back a few inches. It would be a good time to rebuild it while you have it out. And go ahead and replace the drive-shaft u-joint(s).

 

I will say I was apprehensive at first about using stop leak but it was really my only choice, so far so good!

 

eh stop leak isnt so bad as long as it's not used more than a couple times to stop the leaks. Eventually it will start backing up the heatercore