Hi Forum, About 2 weeks ago I noticed a little coolant on my garage floor and didn't think too much about it. I'm going to be putting my baby in the shop in about a month to get her a health check in preparation for my 3rd and probably final cross country trip in her. My youngest son will be 17 this year so from experience, I know this is probably the last time. Any way, I've been checking my coolant and twice I had to put a little antifreeze in it, not much, maybe 4 to 6 oz tops. My question is, can I put one of those leak stoppers on the radiator being that she'll be going in the shop in about 30 days anyway at which time I'll replace the radiator or is that something we should not do on our cars. If need be, I can get it fixed this week, but I was hoping I could hold off for a month. As always I value you guys' opinion. Thanks Forum!

 

Are you sure that the radiator is leaking, and it's not the water pump and/or crossover pipe? Defective water pumps are a well-known problem with the 5.0L engines and have caused catastrophic engine failures. See:
https://www.jaguarforums.com/forum/x...r-pump-120768/
https://www.jaguarforums.com/forum/x...s-argh-165201/
https://www.jaguarforums.com/forum/x...nt-out-192903/
https://www.jaguarforums.com/forum/x...-143771/page2/

I wouldn't use a radiator stop-leak product. It doesn't fix the cause of the leak and, because it circulates through the entire cooling system, can make things worse. Stop guessing and get it properly diagnosed and repaired immediately.

 

I just had the fan assembly replaced 6 weeks ago when the car was overheating. At that time there were no leaks and I asked about the water pump and the mechanic stated it was moving freely and there wasnt any issues. You do have a valid point though. I guess she'll be going in for diagnostics a little sooner than anticipated. Thanks.

 

+1 on everything Stuart said. 5.0L models do not have traditional over temp warnings and, judging from what I've read here, it is very risky to guess when it comes to cooling issues. I watch mine like a hawk and have, so far, not detected any coolant leaks. I also invested in a bluetooth OBD2 device along with the Torque phone app to monitor coolant temp at all times.

 

No leak stopper, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever, ever.

Understand?

 

 

What he said! ^

 

But what about using an egg?

 

Understood

 

Hi Forum, just an update. I took it to the mechanic and he stated there are two hoses going to an aluminium pan and that whole assembly has to be replaced. He stated that if I didn't replace the part soon, I risk getting coolant in my transmission. So he ordered the part, I forgot exactly what its called. Of course he received the wrong part initially, which is all too typical. The correct part arrives on Monday. Since going to the mechanic last week, I've only driven the car twice....two Wal-mart runs, so approximately 20 miles total.