Redex

[Guest j_mchattie]

My car has a Cat, and is injected. There are a few redex products out there to clean the engine - its done 145k. Does this stuff actually work? despite what it says, is it safe to use?

[johnb80]

Yes it's safe to use BUT I don't think it will make any significant difference.

 

Regards - John

[Guest j_mchattie]

Weight reduction it is then!

 

Thanks

[_dg]

When I used this on previous cars it worked well when poured into the cylinders' for de-coking, but I never noticed any difference on mpg when used as a petrol additive.

 

I did get better performance and better starting after the clean out

[Guest j_mchattie]

Which one did you use to do that? I guess the injector one only works if its in with the fuel. I was going to do the cylinder de-coke, but which product should i use?

 

Thanks

[johnb80]

I'd be VERY careful about decoking in this way. Many people used to do this back in the 60's and there are dangers to this technique. The traditional way of decoking by removing the head allowed you to leave a ring of carbon around the edge of the piston so that you didn't reduce compression by decoking. The back of the inlet valves is another area where redex doesn't get to. What happens if a lump of carbon breaks off after the treatment, where does it go ? My advice would be to play it safe, if it's running reasonably well, leave it alone. If it needs a decoke, take the head off and do it properly.

 

Regards - JB

[Guest j_mchattie]

True, i was considering taking the head off.

 

Oh well, thanks for the advice - think ill let it be.

 

James