While your old cooling system was fine with the old style "American Green"
antifreeze I would recommend that you fill your new radiator, after a
thorough flush, with the current DC required G-05 antifreeze and DISTILLED
water.

It is available from DC, Ford, and Mercedes dealers as well from Valvoline
in their Zerex line. The G-05 formula is in the gold jug.

Most of the commonly available antifreeze is based on the Texaco-GM DexCool
formula and is well known to actually cause corrosion in newer systems.

Beware of Prestone and Peak antifreezes. The Jugs will claim they are
appropriate for DC vehicles but DC now specifically warns against the
"O.A.T." technology they contain.

The G-05 spec antifreeze does cost more than American Green.... an
additional $1 per gallon when I bought mine at PepBoys in May '05.

For anyone interested:
I have a couple articles from industry trade journals concerning the
antifreeze situation, send me a valid e-address and I'll forward them.


"wb" <barie@city-net.com> wrote in message
news:1138480532.590935.204130@g49g2000cwa.googlegr oups.com...
> Yep, got a close look at it last night in my garage. The radiator
> fins are corroding away and just crumbling and seeping and the drain on
> the right side is seeping too. I guess 120K miles is long enough for
> one radiator. Ordered a new radiator will have to put it in when it
> arrives..
>

 

While your old cooling system was fine with the old style "American Green"
antifreeze I would recommend that you fill your new radiator, after a
thorough flush, with the current DC required G-05 antifreeze and DISTILLED
water.

It is available from DC, Ford, and Mercedes dealers as well from Valvoline
in their Zerex line. The G-05 formula is in the gold jug.

Most of the commonly available antifreeze is based on the Texaco-GM DexCool
formula and is well known to actually cause corrosion in newer systems.

Beware of Prestone and Peak antifreezes. The Jugs will claim they are
appropriate for DC vehicles but DC now specifically warns against the
"O.A.T." technology they contain.

The G-05 spec antifreeze does cost more than American Green.... an
additional $1 per gallon when I bought mine at PepBoys in May '05.

For anyone interested:
I have a couple articles from industry trade journals concerning the
antifreeze situation, send me a valid e-address and I'll forward them.


"wb" <barie@city-net.com> wrote in message
news:1138480532.590935.204130@g49g2000cwa.googlegr oups.com...
> Yep, got a close look at it last night in my garage. The radiator
> fins are corroding away and just crumbling and seeping and the drain on
> the right side is seeping too. I guess 120K miles is long enough for
> one radiator. Ordered a new radiator will have to put it in when it
> arrives..
>

 

While your old cooling system was fine with the old style "American Green"
antifreeze I would recommend that you fill your new radiator, after a
thorough flush, with the current DC required G-05 antifreeze and DISTILLED
water.

It is available from DC, Ford, and Mercedes dealers as well from Valvoline
in their Zerex line. The G-05 formula is in the gold jug.

Most of the commonly available antifreeze is based on the Texaco-GM DexCool
formula and is well known to actually cause corrosion in newer systems.

Beware of Prestone and Peak antifreezes. The Jugs will claim they are
appropriate for DC vehicles but DC now specifically warns against the
"O.A.T." technology they contain.

The G-05 spec antifreeze does cost more than American Green.... an
additional $1 per gallon when I bought mine at PepBoys in May '05.

For anyone interested:
I have a couple articles from industry trade journals concerning the
antifreeze situation, send me a valid e-address and I'll forward them.


"wb" <barie@city-net.com> wrote in message
news:1138480532.590935.204130@g49g2000cwa.googlegr oups.com...
> Yep, got a close look at it last night in my garage. The radiator
> fins are corroding away and just crumbling and seeping and the drain on
> the right side is seeping too. I guess 120K miles is long enough for
> one radiator. Ordered a new radiator will have to put it in when it
> arrives..
>

 

wb proclaimed:

> For the past month I have been trying to track down an intermittant
> antifreeze leak in my 93 GC 4.0L. After sitting overnight, especially
> when cold <20F, I am finding a small puddle of antifreeze under the
> right front (passenger) side of the Jeep, sometimes it runs along the
> bottom of the plastic shield under the radiator and looks like it leaks
> from the center. The right frame rail and right sway bar bushing look
> wet with antifreeze and the crank shaft pulley looks like it maybe wet.
> I have already tightened all the hose clamps with no luck. I tried
> reaching around to the back side of the water pump pulley but it seemed
> dry. I'll have a chance to pull it into the garage again this weekend
> to take a good look at it again. So does anyone have any hints on what
> I should look for?

Look for leaks along the tanks on both sides. There is also a common
leak area on the lower right side of the right radiator tank as viewed
from the drivers seat. Dunno if anyone has successfully epoxied the
plastic, easier to put in a new radiator....converting to copper or
aluminum if desired.

 

wb proclaimed:

> For the past month I have been trying to track down an intermittant
> antifreeze leak in my 93 GC 4.0L. After sitting overnight, especially
> when cold <20F, I am finding a small puddle of antifreeze under the
> right front (passenger) side of the Jeep, sometimes it runs along the
> bottom of the plastic shield under the radiator and looks like it leaks
> from the center. The right frame rail and right sway bar bushing look
> wet with antifreeze and the crank shaft pulley looks like it maybe wet.
> I have already tightened all the hose clamps with no luck. I tried
> reaching around to the back side of the water pump pulley but it seemed
> dry. I'll have a chance to pull it into the garage again this weekend
> to take a good look at it again. So does anyone have any hints on what
> I should look for?

Look for leaks along the tanks on both sides. There is also a common
leak area on the lower right side of the right radiator tank as viewed
from the drivers seat. Dunno if anyone has successfully epoxied the
plastic, easier to put in a new radiator....converting to copper or
aluminum if desired.

 

wb proclaimed:

> For the past month I have been trying to track down an intermittant
> antifreeze leak in my 93 GC 4.0L. After sitting overnight, especially
> when cold <20F, I am finding a small puddle of antifreeze under the
> right front (passenger) side of the Jeep, sometimes it runs along the
> bottom of the plastic shield under the radiator and looks like it leaks
> from the center. The right frame rail and right sway bar bushing look
> wet with antifreeze and the crank shaft pulley looks like it maybe wet.
> I have already tightened all the hose clamps with no luck. I tried
> reaching around to the back side of the water pump pulley but it seemed
> dry. I'll have a chance to pull it into the garage again this weekend
> to take a good look at it again. So does anyone have any hints on what
> I should look for?

Look for leaks along the tanks on both sides. There is also a common
leak area on the lower right side of the right radiator tank as viewed
from the drivers seat. Dunno if anyone has successfully epoxied the
plastic, easier to put in a new radiator....converting to copper or
aluminum if desired.