Recent Topics
Engine is new, consuming oil, which oil is best?
by GM4LIFE
08/21/14 02:56 PM
Bįršarbunga
by leeharvey418
08/21/14 02:49 PM
Is Mobil 1 Extended Performance really worth it?
by wolf_06
08/21/14 02:43 PM
Oil Mix in My Motorhome
by rrounds
08/21/14 01:50 PM
Yokohama YK580
by The Critic
08/21/14 01:32 PM
Built EJ205 + Specs - Understanding Break-in Procs
by LaszloToth
08/21/14 01:23 PM
PYB or MS5K
by beadvised
08/21/14 01:23 PM
picked up an XJ Cherokee 4.0, oil recommendation?
by lawrencerd
08/21/14 01:17 PM
Subaru-Any good?
by Dually
08/21/14 01:16 PM
Took 3 nails to one of my ecopias during
by badtlc
08/21/14 01:13 PM
Boston, MA. What to do in short visit?
by 97tbird
08/21/14 11:40 AM
Ht/Hs value of valvoline vr1 10w30 conventional
by joegreen
08/21/14 09:56 AM
Newest Members
plumcrazy, davidperrysmith, FilterMinder1, hammms, 73bug
51030 Registered Users
Who's Online
96 registered (2004tdigls, 901Memphis, 1345, 97f150, 4wheeldog, 10 invisible), 1966 Guests and 224 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51030 Members
64 Forums
218105 Topics
3437980 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Topic Options
#2397376 - 10/05/11 04:50 PM Coolant suggestions for 1994 Chevy Astro 4.3L
sr17 Offline


Registered: 12/07/09
Posts: 234
Loc: Vancouver, BC
My van has developed a leak on the intake manifold gasket, and new coolant is part of the repair.

What does the BITOG community suggest for this vehicle?
_________________________
2005 VW Jetta TDI - 202,000 km
2000 VW Golf TDI - 306,000 km
both on Mobil 1 TDT 5W40

Top
#2397431 - 10/05/11 05:35 PM Re: Coolant suggestions for 1994 Chevy Astro 4.3L [Re: sr17]
Bill in Utah Offline



Registered: 11/11/02
Posts: 12781
Loc: UT
I'm running Peak Global lifetime in my 04 4.3l GMC. Every 3 years just going to do a drain and fill with 60/40 mix.

MY 1996 4.3 Chevy has 270k with Dexcool changed every 3 years. Its really not that picky on fluid as long as you FLUSH out any old coolant IF you change over.

Take care, Bill

Top
#2397460 - 10/05/11 06:15 PM Re: Coolant suggestions for 1994 Chevy Astro 4.3L [Re: sr17]
Donald Offline


Registered: 03/21/04
Posts: 13286
Loc: Upstate NY
My 1993 5.7L Suburban runs G-05. Its not much more $$ than other antifreeze and now I can run G-05 in all my vehicles.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#2397488 - 10/05/11 06:51 PM Re: Coolant suggestions for 1994 Chevy Astro 4.3L [Re: sr17]
sr17 Offline


Registered: 12/07/09
Posts: 234
Loc: Vancouver, BC
Was there not something about this intake manifold gasket issue being caused by using the wrong kind of coolant, or am I off base here?
_________________________
2005 VW Jetta TDI - 202,000 km
2000 VW Golf TDI - 306,000 km
both on Mobil 1 TDT 5W40

Top
#2398739 - 10/06/11 09:48 PM Re: Coolant suggestions for 1994 Chevy Astro 4.3L [Re: sr17]
Donald Offline


Registered: 03/21/04
Posts: 13286
Loc: Upstate NY
Originally Posted By: sr17
Was there not something about this intake manifold gasket issue being caused by using the wrong kind of coolant, or am I off base here?


I think you are referring to the intake gaskets that had some plastic in them and the plastic was damaged by 2-EHA which is in Dexcool and Dexcool clones like "all makes all models". Once air got into the cooling system from the damaged gasket, sludge formed (Dex-sludge).
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#2399051 - 10/07/11 10:36 AM Re: Coolant suggestions for 1994 Chevy Astro 4.3L [Re: Donald]
Boss302fan Offline


Registered: 11/07/09
Posts: 1895
Loc: Oconomowoc Wi
Originally Posted By: Donald
Originally Posted By: sr17
Was there not something about this intake manifold gasket issue being caused by using the wrong kind of coolant, or am I off base here?


I think you are referring to the intake gaskets that had some plastic in them and the plastic was damaged by 2-EHA which is in Dexcool and Dexcool clones like "all makes all models". Once air got into the cooling system from the damaged gasket, sludge formed (Dex-sludge).


Most issues happen when owners do not follow a regular maintenance schedule and also some faulty radiator caps. Filling the overflow tank a few inches above the hot mark(while cool) also helps prevent any air getting in the system. I would do this with any coolant.

As with all coolants, I would recommmend radiator drain and fills every other year to prevent most coolant issues. Changing out the rad cap every 3-4 years also may help.

Top
#2441915 - 11/22/11 03:00 PM Re: Coolant suggestions for 1994 Chevy Astro 4.3L [Re: sr17]
cp3 Offline


Registered: 07/26/06
Posts: 2556
Loc: Kitchener, Ontario, Canada
Originally Posted By: sr17
My van has developed a leak on the intake manifold gasket, and new coolant is part of the repair.

What does the BITOG community suggest for this vehicle?


Oh, I feel for you brother! Not a terribly fun job, at least not in the driveway in December, at minus whaterver, it wasn't. Realy it's just akward because of the location. Easier to get the manifold in and out with two people, one inside one out.

As for the coolant, I would agree with Bill. Whatever, just rinse it if you're changing.
_________________________
Dodge Charger|Pennzoil Platinum 5w20|Mopar MO-744
Pontiac G6 GT|Mobil 1 0w40|Mobil 1 M1-101

Top