THERMALWELD works!!!!!!!

Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the Intrigue / Aurora 3.5L Twin Cam V6 (Short Star ) , 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
Post Reply
Ohiokudzu
LE Member
Posts: 8
Joined: Tue Aug 16, 2022 4:55 am
Year and Trim: 2004 GXP

THERMALWELD works!!!!!!!

Post by Ohiokudzu »

Hey folks. I wanted to give an update on my 04 GXP with the blown head gasket. I was not financially able to swap the motor with a rebuilt one. Prices ranged between 7k and 12k. Found some off the shelf head gasket sealer products but none seemed to have any good reviews or resulted in a long term fix. After googling “northstar head gasket problem” I discovered a product called THERMALWELD. It was more than twice the price of any of the off the shelf head gasket sealer products and couldn’t find any online reviews of the product. The car is a cream puff and only had 123k miles. I couldn’t in all good conscience let it end up in a junkyard. So I pulled the trigger and spent the $250 bucks. The company rep Mr Hooper walked me through the treatment process and within 5 minutes the coolant stopped pouring out of the exhaust. I’m a believer! The stuff worked! 6+ months later and I’m still using it as my daily driver. It’s a miracle!
User avatar
95naSTA
Certified Bonneville Nut
Certified Bonneville Nut
Posts: 7087
Joined: Wed May 21, 2008 11:47 pm
Year and Trim: 95 SLE
Location: Philadelphia
Contact:

Re: THERMALWELD works!!!!!!!

Post by 95naSTA »

That is a miracle. Cool to see it work out.
Image
95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.
Ohiokudzu
LE Member
Posts: 8
Joined: Tue Aug 16, 2022 4:55 am
Year and Trim: 2004 GXP

Re: THERMALWELD works!!!!!!!

Post by Ohiokudzu »

Update on my 04 GXP:
Still running, not using coolant at 134k+ mileage. Definitely worth the $250 I spent to fix the leaking head gasket! The only issue at the moment are lean codes on banks 1&2 which is throwing a chk eng code.
User avatar
95naSTA
Certified Bonneville Nut
Certified Bonneville Nut
Posts: 7087
Joined: Wed May 21, 2008 11:47 pm
Year and Trim: 95 SLE
Location: Philadelphia
Contact:

Re: THERMALWELD works!!!!!!!

Post by 95naSTA »

Nice. You certainly got your money back out of that repair.
Image
95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.
Post Reply