Exhaust fitting - should my mechanic have used exhaust paste/sealant?

[chris182cup]

hello can anyone tell me if its ok not to put exhaust paste or whatever on my new exhaust?

i dont think my mechanic used anything i think he just bolted it on and made sure it was all tight and not blowing anywhere, not gonna be happy if it needs to get on the ramp and get this stuff applied to it

thank you

 

[bradharding24]

Should be fine without, but depends on the joint type on the exhaust.

 

[LouisQ]

Pretty common to give joints a squirt to make sure they dont leak. Not gospel though

 

[SBV116]

If it's not leaking no issue!!

 

[DrR]

All the stuff does is stop it leaking.

 

[scotty2hotty81]

if its fitted correctly and its not a cheap exhaust then you shouldnt need any.

 

[Pete@Auto-Nation]

Flange joints should be OK, but most slip joints need it to be 100% air tight.

 

[Dave..]

As said, if it's not blowing, it'll be fine without.

If you do need to use anything though, make sure it's the silicone style sealant. The paste just crumbles off after 3 weeks.

 

[Fred@BTM]

any "mechanic" or anyone in general that uses paste (s**t like gungum/fireseal etc) needs a swift kick in the genitals - its crap

use silicone or don't bother

 

[delcbr]

any "mechanic" or anyone in general that uses paste (s**t like gungum/fireseal etc) needs a swift kick in the genitals - its crap

use silicone or don't bother

can you recommend the exact kind of silicone to use as ive had alook and cant find any.

 

[Oldskoolbaby]

Just normal cheap clear silicone from Travis Perkins or the like. Don't worry about the temperature effecting it, it will never get near hot enough to degrade it. Ive used it on my vee with no problems, a 700bhp hot rod, a Mk5 Golf R32, an S5....all with out problems.

 

[Andyman]

Loctite gasket seal from Halfords. Cant remember the code number. Its ginger in colour lol