Stop smoke additive

Anyone tried this. I was looking at the Wynn's one which I think is mainly meant for cars and heard it works quite well. My SV burns a little oil and I often get some blue smoke when I start it up. Anyone see any harm of trying some of this in with the oil?

[Bibio]

personally i wouldn't, car oil/additives have 'friction' agents in them. these are not good for wet clutches.

its most likely needing the valve stem seals done or a re-bore, sometimes you can get away with an 'engine flush additive' which un-gums the rings and seats them better on the bore.

how often do you change the oil/filter?

[yorkie_chris]

How many miles has motor done? Overfilled with oil or anything daft like that?

Oil flush can make things worse, it can be the baked on crap making the seal, remove that and you lose compression. Although I've only seen this on car engines.

I'd do a compression test and see what's going on.

[rictus01]

Originally Posted by yorkie_chris

I'd do a compression test and see what's going on.

Wise words from our yorkshire friend, address the problem itself first, before looking for shortcuts to a fix (or botch job).

generally only 4 reasons for this,

1. over filled oil
2. old thin oil
3. worn componance
4. change of pistons form cast to forged

the first is easy to sort, the second may cause buildup as the thinner oil passes seals or rings, but if that were the case I'd want to check it out properly anyway and a top end strip would be in order, the third, well no bottle of anything is going to fix that for any length of time, and the fourth was someones choice, the forged Items take longer to expand the originals so a little oil will always get passed, the price you pay.

Cheers Mark.

Originally Posted by yorkie_chris

How many miles has motor done? Overfilled with oil or anything daft like that?

Oil flush can make things worse, it can be the baked on crap making the seal, remove that and you lose compression. Although I've only seen this on car engines.

I'd do a compression test and see what's going on.

+ 1, Chris knows what he is talking about. I wouldn't bother with the addictive, it is covering up something not repairing it!

Cheers. I've had the bike only for around 10 months and have already done a couple of oil changes. The bikes done around 31k now and I don't think that that the previous owner was too particular. I think it's probably worn components, but thought this might help a little as it is supposed to reduce oil consumption a little as well. Do you reckon I'm just wasting my time/money then with it? If I was certain it wouldn't do any harm I'd get it to just give it a try, it's not particularly expensive.

How does it actually work ?

[Bibio]

Originally Posted by gavinsky23

Do you reckon I'm just wasting my time/money

yup ... coz its most likely going to scr£w ur clutch as well.

31k aint that much mileage if its been looked after. i know chris knows his stuff. but i have used engine flush before and still use it till this day and it works a treat.. its and old argument to use or not to use, bit like the oil argument.. and it may or may not work.

if it works then good and fine, it was probably just gummed up and sticky rings

but if the bore or valve stem seals are screwed anyway ..its just going to make it all nice and clean inside for the mechanic to do the work if it needs it...

stop smoke is a solution for getting things threw an mot or selling a car/bike to an unsuspecting punter. yes it will probably work for a while but eventually you will have to do the work. and as said before it also contains 'slippery' agents that will be no good for your clutch plates.

The way I understand it works is by increasing the viscosity of the oil - If it's the Wynns stuff, I think this is basically a VI improver package, a polymer additive similar to that already used to reduce the thinning of the viscosity of oil as it gets hot

If you have worn rings or valve seals, using a thicker oil will effectively reduce the oil that gets past the wear, lessening the burning.

You could get a similar effect by just using a thicker oil, such as a 10W-50 or 20W-50 I reckon ....

Not sure what it would do to your clutch, as I don't think friction modification is a key feature.

I wouldn't risk it - like someone said, a bit like taking an aspirin because someone is hitting you on the head with a hammer ...

Spokey