Hi,
I did a quick search for rubber preservatives and only found one that did not help.

Here is a picture of a rubber exhaust hanger, after being under my car for 35 years it is beginning to show fine cracks.



It is serviceable as it is, cleaned it with soap and water and used some silicon oil as a dressing.

Does anyone know of a real rubber preservative, something that you can apply once and it lasts a long time. Looking for something that lasts for a few years!

One preservative claims to last a whole five weeks before you need to reapply it!

 

Anything petroleum based will make it look shinier and cause the outer layer to swell up and hide cracks for awhile. That's about the best you can get.

Honestly, I've tried a lot of different things to mitigate dry-rot on rubber in our cars, and the only true solution I've found is to just bite the bullet and pay for new. It feels expensive until you add up all the time, hours, and different band-aid solutions you've tried to get there. Especially for something cheap like an exhaust hanger.

 

There is no magic solution to restore rubber. I do however like Car-Pro Perl for cleaning it up and making it look great. It's a concentrated dressing that they claim will last for 3 months. I know it makes hoses, seals and everything rubber and plastic look amazing.

https://www.carpro-us.com/search.php...ection=product

 

Rock Auto has this. More Information for AP / EASTERN 8172 (rockauto.com) It's not exactly like ours but may work ok, and it's only $3.97.
They have a pretty good selection of hangers as well if one is trying to build something custom.
Exhaust & Emission > Hanger / Bracket > Hanger / Bracket | RockAuto
Exhaust & Emission > Hanger / Bracket | RockAuto
They don't have dimensions so I don't know if they are the same size as our but they have these as well.
More Information for AP / EASTERN 9959 (rockauto.com)
Unfortunately, you have to buy 50 which is a little pricey. $56.50

 

went with high 80 durometer urethane exhaust hangers on my Subaru and it really tightened up the exhaust. Thanks for the reminder, I’m probably overdue on my fc and will look for something similar to what I used on the sti.

 

I'm a fan of Shin-Etsu grease. it's the Honda recommended goop for weather stripping.

 

I just ordered a tube, not cheap. Let's see how good it is?

 

its magic stuff. put a little on all the rubber bits, and the thing will feel like a Mercedes

 

Oh, if only this is true!

 

The tube of silicon grease arrived, I applied a bit to an old rubber sleeve and left it for a day.
This is not the product to make a rubber part look nice, the next day there was still a coating of the grease which had to be wiped off.

But, I like the idea of this layer of silicon grease covering the rubber piece for protection over a long time.

Rubber parts do not do well in high temp conditions, maybe the grease will help extend the life of the rubber over time.

I will be applying this grease generously on all the rubber parts I can and hope for the best.

Thanks for the tip!

 

Hi everyone, I just purchased a can of this dry lubricant.

My initial purpose was to coat the washers on the aux. port shaft. I noticed the "C" washers wear out over the years until they fall apart.

I ordered replacement C washers from Atkins, and I was wondering if this dry lube with Teflon would be better the moly or lithium grease that I also have, over time.

The support bearing that the shaft goes into, should it be greased, or will the dry lube be better?

Since it is quite the project to check on these parts for a running engine, your input would be greatly appreciated!

 

Hi everyone,
When I went to disassemble the fuel lines from the fuel rails I had to slice them with a razor blade to remove them!

Now that I am reassembling these lines, I was wondering what I can use as a lubricant between the hose and the metal connection?

I have petroleum jelly, silicon grease and other lubricants to use. What do you recommend so that the hose does not weld itself to the metal?

 

Hi everyone,
I am almost finished cleaning up the engine bay. My first hose connection was from the heater outlet on the firewall to the hardline going to the radiator. I put a light coating of Shin-Etsu grease on the brass outlet and the inside of the hose. While tightening the stock type hose clamp, I twisted the hose side to side until it was hard to twist! This took more tightening than an ungreased connection, it was expected.
I will be doing this to all the hose connections in the belief that when I have to separate a connection it will not stick together so much that I need to use plyers to get it apart.

What do you think?

 

Hi everyone,
After a few months going over my old parts I found that putting a generous coating of MolySlip silicone grease and leaving it on overnight produced a useable piece again.

It's clear and after I wipe it off with a paper towel it removes the old surface that has deteriorated over time, kinda looks new again!

This is also my go to O-ring lubricant and brass shaft bearing lubricant.

Very pleased with the results! Give it a try.