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Considering rebuilding my Northstar


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so, then why not run the green antifreeze? you may just have to change it more often than the dexcool, but the issues that the dexcool has presented, i'd rather run the green and avoid the issues altogether.

i have a 96 grand am gt with a 3100 v6, dexcool car. after i did both head gaskets, ported the heads, swapped to the big port 2000+ up 3100 intake, ported the intake, there was no way i was running dexcool after the damage i saw to the gaskets and the metal. the northstar is going green.........

Run green antifreeze in the 93 car as the internals of the cooling system are plated with silicates. There would be no benefit to using Dex in a car that was contaminated with green, silicated antifreeze. In the 98, run Dexcool - far less abrasive to the waterpump seal, extended change intervals.

Personally, if I were looking for a used Cadillac that was 1996 or newer and it had green coolant, I'd pass it up and keep looking....

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Hello - if you decide you need to do the time-sert job, I do have a time-sert kit for sale. Kit #J-42385-500 for the Northstar 4.0/4.6 - you would need to order the inserts you need from the Time-sert Website but they are not expensive. Just let me know if you are interested.

Good luck with whatever you decide to do!

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Hello - if you decide you need to do the time-sert job, I do have a time-sert kit for sale. Kit #J-42385-500 for the Northstar 4.0/4.6 - you would need to order the inserts you need from the Time-sert Website but they are not expensive. Just let me know if you are interested.

Good luck with whatever you decide to do!

Thanks for the offer, I appreciate it

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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