Coolant crossover photos - Page 4

mtflight · #46 (**permalink**) 12-15-08, 05:54 PM

hmmm... maybe you can send some my way? I wish there was a less messy way to do it than the lower radiator hose (I don't want any neighborhood cats to "drink the Kool-Aid").

ewill3rd · #47 (**permalink**) 12-15-08, 06:54 PM

Actually the seal tabs are recommended for the 4.5 and 4.9 but not for the N*.
You CAN use the seal tabs (what we used to call cadillac pills) if you have small leaks and they will work okay for a while.
It takes me between 3 and 6 hours usually depending on what year they are. The newest ones ('06 and up) are easier.
Good thing too, because you have to remove the crossover to do the water pump!!

submariner409 · #48 (**permalink**) 12-15-08, 07:21 PM

.......from the 2002 Cadillac Seville Factory Service Manual:

(and the red, black, white, yellow sticker on the radiator sight shield also calls for the GM supplement tablets)

**Ranger** · #49 (**permalink**) 12-15-08, 07:36 PM

Quote:

Originally Posted by mtflight

hmmm... maybe you can send some my way? I wish there was a less messy way to do it than the lower radiator hose (I don't want any neighborhood cats to "drink the Kool-Aid").

Stick them in the upper hose. There is less coolant loss that way. The other option (less mess) would be to drain the coolant and then mix the tabs with it. Once broken down well, pour it back into the surge tank.

I can send you some tabs if you like, but it wold probably be faster to get them from Walmart. I don't think they are very expensive.

ewill3rd · #50 (**permalink**) 12-16-08, 07:55 AM

Well someone lied to me.... those bums!
Yeah, I'd go by the manual.

mtflight · #51 (**permalink**) 12-16-08, 05:09 PM

So maybe it was 2003 when they stopped using them? I don't have any stickers under the hood as I did with the ETC. I think "bob" said 1 of the Bar's leak golden seal tubes for the N* and 2 for the 4.5/9...

I'm always afraid of leaving air in the system and having some kind of head gasket issue. After replacing the radiator on the ETC I saw 228 for the first time and the car kept running warmer than usual.. until my 2 instances in the 250s where the only thing that worked was pulling over and idling to bring the temp down. The coolant was dripping out the overflow hose after those.... ugly memories.

**Ranger** · #52 (**permalink**) 12-16-08, 06:17 PM

Quote:

I'm always afraid of leaving air in the system and having some kind of head gasket issue.

Don't worry about it. It's self purging and will purge any air left in it as long as the purge line is clear. The sealant tabs tend to clog that sometimes. Another reason I don't use them.

ewill3rd · #53 (**permalink**) 12-16-08, 10:12 PM

I have a cool tool that uses a venturi to pull a "vacuum" on the cooling system and then fill it.
It works great but I think they are pricey. GM sent them out as a special tool but no one knows they exist.
It is awesome and rarely ever have I had to top a system off after using it.

mtflight · #54 (**permalink**) 02-05-09, 11:06 PM

Adding the 2 golden seal tubes to the upper hose, and it worked. No more coolant smell.

Unfortunately the "floater" coolant level sensor seems to have moved up: the reservoir is 3/4 full, and if I take some coolant out to put it in the middle, I get a "check coolant level" message in the DIC. I hope it's not a sign that the sensor is going to go south on me.