Page 1 of 1

Rad cap grease trick

Posted: Tue Oct 02, 2018 4:33 pm
by fuerte
I am posting on something I know someone has mentioned numerous times but I forget who and exactly what they said.
Someone said they put grease round rad cap
1.what type of grease
2.exactly where and how.
I am heavy handed,ham fisted and eyesight rubbish close up so before I give it a try I need to male sure I dont end up with grease in my coolant.
I think it was on old site so cannot find the post.
Sorry to ask you to repeat yourself again.

Re: Rad cap grease trick

Posted: Tue Oct 02, 2018 6:54 pm
by cpt black
Silicon grease on the rubber seal

Re: Rad cap grease trick

Posted: Tue Oct 02, 2018 7:07 pm
by fuerte
cpt black wrote:
Tue Oct 02, 2018 6:54 pm
Silicon grease on the rubber seal
Thanks I have wd40 silicon grease in a can I used to use to prevent a porch door sticking but I found it left a residue so I swapped to gt85.
Have I got the right product and how do you apply.
When I used the wd40 version it left a rubbery residue when it dried out.I dont think I need worry about it getting in coolant as sets solid.
Worth a try but I will wait to hear from you or not 7 days before risking it.

Re: Rad cap grease trick

Posted: Thu Oct 04, 2018 8:27 am
by cpt black
I use silicon grease, there own make got mine from RS ONLINE ;)

Re: Rad cap grease trick

Posted: Thu Oct 04, 2018 8:41 am
by fuerte
cpt black wrote:
Thu Oct 04, 2018 8:27 am
I use silicon grease, there own make got mine from RS ONLINE ;)
Thanks

Re: Rad cap grease trick

Posted: Thu Oct 04, 2018 9:29 am
by jrh
Yes, silicone grease , can also be found in plumber merchant shops in little screw top tubs.
Tell them it is for lubricating O-Rings and they will show you what they have in stock.

Re: Rad cap grease trick

Posted: Thu Oct 04, 2018 9:38 am
by fuerte
Thanks both of you.
It was ok until the garage fitted the thermostat and put rad caps on wrong way round.oh well will get there in the end.