AnotherOldJeepGuy

The sample was finally delivered yesterday to Blackstone according to delivery confirmation so now it should be in the analysis queue.

I just got an email back from them that they haven't gotten it yet, but they have been experiencing delivery delays and suggest wait 1 more week before trying anything on tracking. Then I checked USPS delivery status and they have now updated for a delivery tomorrow, so at least USPS says they have a plan and looks promising.

@fiatslug87 Have you have much luck communicating with Blackstone via the message section of their website? I sent them a message 2 days ago and never got a response. I shipped my sample on Nov 2, USPS tracking stopped providing any information after Nov 4 (which has happened before by the way) so I asked if they received my sample and was anticipating a response.

It is true I have replaced my tank probably 4 times over the years, the most recent was sometime in the last 12-18 months so the one in there now is fairly new. I can't prove the cap is not allowing any evaporation, but I can say there is no sign of any leak at that tank. I actually have the next new tank already on the shelf in the garage, they go out for me often enough that I usually have the next new one on hand. I would love to replace the plastic tank with the aluminum version, but sounds like the replacement noted here is no longer available.

Thanks anyway. Guess I should take a look at that one.

Coolant dropping fast . My center mark is basically at the target fill level. At this rate it looks like I will have to refill to that target level every ~300 miles. Delivery tracking says my oil sample should get to Blackstone sometime today, should not be too long until I have analysis to show if it's going into the oil or not.

I think I need to drive from TX to OR and bribe you to replace my RMS and OPG

Yeah I have looked both running and not running and anything I have been able to find visually has been fixed. But I may not be seeing every possible spot.

Got under there with the light, I don't think I see anything that convinced me it was coolant. There were a variety of colors here and there, hard to know what all may have been collected there over the last 36 years .

Since I learned earlier that the dye I put in originally is persistent, if there is any coolant there that got there since July, the blacklight should point that out pretty quickly. It stands out better at night, so I'll take a look after sundown.

I have not looked under my carpet, all I can say at the moment is my carpet is dry and I don't smell anything in particular in the cab. Also, my heater has not worked in well over 10 years, maybe over 20, but since winter in TX isn't generally cold (to a WV native) that has not been an issue. I'd love to fix that, but no way I am pulling my dash! How much can you pull up the carpet without removing body parts?

Still can't be sure if I am still burping the coolant from the repair, but assuming I am not, a very early comparison of before/after leak repairs suggest improvement, but not a 100% fix. Much less visual loss comparing the current 96 mile snapshot to the 82 mile snapshot before the repair. I have learned not to celebrate too early, but this is at least a hopeful data point.

Collected up some oil yesterday and will put it in the mail to Blackstone today.

The discount is on the whole cart when I have used it and it can be reused if you do make an additional order although your plan for reducing shipping where possible is still a good one. IIRC I have also used it on items marked as warehouse closeout and it still worked.

Thanks for the update!

Yes it does. Can't tell if the new one is molded or flat from the pic for sure, but it looks flat. Also curious of how it is attached. I don't see any plastic bolts holding yours in place so the guess is it is stuck there with adhesive instead. Which also suggests you have to drill holes to install the new one with the fasteners provided.

If you give it a try post pictures of the install please!

It's been over a week since the known leak repair, and I am still loosing coolant. Some of this could be that it's not burped enough, but that seems less likely after driving for a bit and topping off. So I have requested the free oil sample kit from Blackstone Laboratories suggested by @fiatslug87 earlier to see what an oil analysis might say. I'll keep topping off for a few days just in case it's just not burped enough. I don't really know how to tell if it needs burped other than checking the level.

I've seen, and posted, Rock Auto discount codes here. Anyone got a 2026 H&R Block Discount code to share? Looks like the format is xxxx-xxxx

Might be a challenge to get it through the metal detector.

Here's a new 5% Rock Auto Discount code good through Nov 13. Code: 354930181172570460 Input in the "How Did You Hear About Us?" box when ordering (see Sept 25 Post)

I often learn stuff here, today I am learning the existence of these plugs. I have been hunting a coolant leak, perhaps I need to "expand" my search to these things. Are the locations I have marked "?" also expansion plugs?

The last squeaky serpentine belt that I successfully quieted I did so by: - took the belt off and scrubbed it clean in the sink with dove soap, rinsed well and completely dried it. - cleaned all the things the belt touches with dove soap and a toothbrush. Reassembled and the squeak was no longer there.

2nd the allen head inside. I had my calipers off not too long ago and I don't believe the boot came off with the bolt.