The manual for my '88 says to use 2, the package says to use all 6. Chevy parts man says when they were packaged on a card of 2, they were the same size as they are now. How many to use?

Anyone have the definitive answer?

Thanks

 

The Helms manual for my '96 says to use 6 pellets.......I am getting them today, since I am putting in a new radiator...

 

Hmmmm... that's odd. I stopped by the dealer just yesterday and bought a pack of pellets... and there were only 5 in it! Go figure... :confused:

Yes, I dropped all five in :yesnod:

 

Here's a thread from awhile back. http://forums.corvetteforum.com/zerothread?id=259574
Don't know if it helps :confused:
:cheers:

 

My 92 requires 6. My wifes 94 Z- 28 requires 2. They are both 350"s but there are not the same engines. So I would go with what ever the General says in your shop manual.

 

Thanks for the advice and experience. Since my heater core has a tiny leak, I'll try it with 2 first and add more later if things are still leaking.

 

Changed my radiator today and went to the Chevy dealer. The Vette takes six pellets. I also did crush them and pre-mixed them with the new coolant to pour directly into the radiator per directions on the pack. The pack GM sells contains exactly six pellets.......

 

The shop manuals have been revised with a TSB from GM. GM no longer recommends using sealing pellets.

Do a search the TSB is on this forum. I no longer use the pellets.

Pete

 

Don't add any Gerble pellets :U

Fix your leaks, they will only cause more problems sooner than you think!!

Flush out your system, remove the knock sensors and drain the block. Run clean water until your clear through the knock snesor holes. Wrap em with silicone thread tape, reinstall, then add all new DEX-Cool, distilled water and a quart of Purple Ice.

Now you don't need the pellets and the Dexcoll will lubricate your waterpump bearing since it has no silicates to wear it out :D

This is my recipe to keep my ride running cool :cheers:


[Modified by 95BLKVette, 9:18 PM 3/29/2002]

 

Forget the "purple ice"
Forget the DexCool if pre-94
And use Dionized Water!

:p:

 

I disagree.

They didn't have Dexcool back when the earlier Vettes were designed, otherwise they would have speced it in those too.

Dexcool was engineered to work with aluminum as well as cast iron. The major advantage is that it cools better than the older green ethylene glycool based coolants and doen't contain the silicates that abrade the water pump seals.

It won't hurt an older system, it can only improve it.

However, the only problem is that it may actually loosen some old deposits and cause leaks since it works so damned well :rolleyes:

 

I disagree :p: . GM has a TSB out that says only 94+ C4's CAN use Dexcool. Only '96's came with it.

 

Wrong, DexCool breath! DexCool IS an ethylene glycol based antifreeze. DexCool does not provide any cooling benefits beyond standard green coolant.

Wrong, DexCool breath! GM does not recommend using DexCool on pre-94 engines. This is to do with many factors, however look into sealing gaskets and areas in the cooling system that may allow cavitation or aeration of the coolant. Green is very stable, DexCool needs a suitable enviroment, IMO.

Never heard that before. Can you base that statement on any fact? Links?

Pete

 

agreed peteL

 

That's OK with me Glock, note I said it may work too good on an older engine and actually cause leaks. GM is covering itself on this one.:chevy

 

"Wrong Dexcool Breath" :eek:

My we're getting a little hot under the old collar here aren't we?

I own a 95, been using Dexcool for the past 2 years and luv the stuff.

OK, it's ethylene glycol based...you have me there, but it doesn't attack your water pump seals like the green stuff and you don't have to change it as often either due to it's antioxidant properties.

Havoline Extended Life Anti-Freeze/Coolant DEX-COOL ® is a universal engine coolant
which incorporates a patented carboxylate inhibitor technology. This coolant meets both ASTM D
3306 for automotive service and ASTM D 4985 for heavy duty diesel service. It is a nitrite-,
nitrate-, phosphate-, silicate-, borate and amine-free formulation which uses Texaco’s patented
carboxylate technology to provide maximum protection of the six basic metal alloys found in most
heat transfer systems. Since the coolant contains no phosphates or silicates, hard water deposits in
the cooling system are almost eliminated. The low level of abrasive dissolved solids in Havoline
Extended Life Anti-Freeze/Coolant DEX-COOL ® results in improved water pump seal life.
The life of a coolant in an automobile engine is limited by the corrosion protection ability of the
corrosion inhibitors. The main corrosion inhibitors in Havoline DEX-COOL ® Extended Life
Anti-Freeze/Coolant has been shown to remain above 95% of their original concentration after
150,000 miles in automobiles. This allows much longer intervals between coolant changes without
worrying about loss of corrosion protection. Used Havoline Extended Life Anti-Freeze/Coolant
DEX-COOL ® was tested in laboratory controlled corrosion tests for new coolants after it had
already been in service for more than 200,000 miles. The used Havoline Extended Life Anti-Freeze/
Coolant DEX-COOL ® passed the ASTM D 1384 requirements for glassware corrosion
with results equivalent to new coolants and also passed the ASTM D 4340 Aluminum Hot Surface
Test for new coolant. Havoline Extended Life Anti-Freeze/Coolant DEX-COOL ® represents
the next generation of universal engine coolants. This coolant is suitable for a five year or 150,000
mile service life in automotive applications.


[Modified by 95BLKVette, 10:37 PM 3/29/2002]

 

I dunno what all the problem with Dexcool is......I had cars with aulminum heads/cast block (Chrysler) that did not use Dexcool and I had a 1992 Buick Roadmaster with an all iron 350 that I converted to Dexcool and drove for over 100,000 miles that way. Never had a problem, never had a leak, never missed a beat...... :nonod:

 

Naw, not hot under the collar at all. Just don't elevate the coolant to levels is god-like status.

The redeaming value is in service length and water pump seal life. Service life of the corosion package in DexCool is proven in fleet diesel use for years. However the package choosen by GM differs in some areas.

Your comments in general are well received, however there are serious issues regarding DexCool in back use in pre-95 engines. If you do a search on this forum you will find many links on this issue.

Pete

 

95BLKVette, I can cut / paste after-the-fact stuff from sights also. But what you posted is just "stuff". Never answered the question. What is your point?

Be careful, I have spent some time on this issue with DexCool. I can help, but I'm not inclined to get into a crap-feast. Do a search on the forum and see what you find.

Pete

 

:rolleyes: he must think this is Off Topic or the C5 forum...or maybe it's time for a Supra :jester