Caliper guide pin lube

[Wernd]

I know there's a post about what people are using on their guide pins but I cant seem to find it. I had been using the ATE plastilube but due to that post I tried wd40. While it has made them cleaner and a bit more free they do tend to stick once the wd40 is cooked away. Anyone else have a magical lubricant they use?

[cobra]

I use 3M Silicone Paste. It can also be used directly on brake seals and other parts because it won't damage rubbers.

https://www.3m.com/3M/en_US/p/d/b40070802/

[Estoril]

I clean them hospital-clean with no abrasion marks on the pin. I don't use lube and have no issues. If the barrel is sealed with a cap (my brass bushing don't support a cap), I suppose you can use any lube (I once used copper anti-seize) but I don't want any compound that can collect brake dust or fine road grit.

[Ryan_R]

As cobra mentioned, be sure to use a silicone based lube. Anything else can destroy the seals rather quickly.
I’ve always use this:

https://www.agscompany.com/products/sil-glyde-silicone-brake-lubricant

[PSUEng]

Toyota lithium soap grease. Plastilube is not for inside guide pin boots. It's for metal on metal.

[eljay]

I've had good success over the years with Kleen-Flo eZe Slide Brake Lubricant (KLF331). It's silicone based.

[Wernd]

Sorry I didn't put in, I'm using the ecs brass bushings with the steel pins, so it is metal on metal. Wd40 works for a day or so at an hpde but at some point it burns away and the pins start to drag as do the brakes. Looking for something better

[cobra]

You probably want something fortified with a solid lubricant in that case, such as moly paste.

[BMWE46M3]

I use and recommend Sil-Glyde Silicone Brake Lubricant. https://www.agscompany.com/products/...rake-lubricant

[M Coupe]

Another vote for Sil-glyde!

[Will]

ATE notes that Plastilube can be used on slide pins. Not sure how it compares to other products.

[Shonky]

Does everyone here largely ignore the "Only clean guide screws; do not grease." in TIS?

[Estoril]

Does everyone here largely ignore the "Only clean guide screws; do not grease." in TIS?

I don't ignore it. As stated earlier - I don't like lubes that can hold abrasive brake dust, road grit etc. and cause binding.

[PSUEng]

ATE notes that Plastilube can be used on slide pins. Not sure how it compares to other products.

Yeah, I read that--I could see how one could interpret it that way but I stick to metal on metal as I've just had great results with the Toyota stuff, in a sliding caliper, with steel pin and sealed rubber boot.

On my M3, last brake job I ran new ATE pins, bushings dry and I had sticking problems (bushings too tight, out of tolerance?). So, I hit them with the Toyota "grease" and zero issues--just like on my Lexus as the official TIS calls for on that vehicle. I'm not confident that in the BMW TIS the word "grease" = "lubricant". Rather, the word "grease" may = "some kind of grease not suitable for this application (rubber swelling, washout, etc.)".

And, not to mention, these slide pins should be cleaned/inspected/replaced along with the bushings as a matter of maintenance. So, yes, they may get dirty, but cleaning is a matter of maintenance and if maintained seizing is mitigated. That's how I roll this all up anyway. I guess we can chock this up there with the debate on adding angle to the torquing of the skid plate bolts.

[eacmen]

Permatex 80653 Silicone Extreme Brake Parts Lubricant, 8 fl. oz. https://a.co/d/8w3RIkl