Do not put additives in your transmission. They swell the seals to make them stop leaking but the effect is temporary. Soon they will leak worse than before. Seals leak for a reason. Usually because they are worn. The thing to do is to find where the leak is and fix it. Start with the dipstick. Pull it out and inspect the fluid. If it is not nice and red and smells good ie, not burnt, then you can usually get by with just fixing the leak. If the fluid feels gritty and smells burnt then you have to flush it out and replace with fresh or you will just keep eating up seals. There are several places the trans could leak. Clean the exterior and watch for the leak. If it is the shift cable there is a way to stop it. If it is the pan gasket you just have to replace it. If the trans is overfilled it will leak all over. Don't forget to check the final drive. It has a separate resovoir. If the trans was overheated you might have to replace all of the exterior "O" rings. You could also have a leaky hose. Never drive on a low fluid level. The fluid will foam causing the trans to slip and if it slips it will burn up. It can happen very quickly. I am always amazed that people think they can buy "Mechanic In A Can"!!!!!! In most cases additives do nothing except empty your wallet. That goes for the gas additives, the oil additives, the stop leak additives, the battery additives, injector cleaners, etc. There are some that do work. For instance Marvel Mystery Oil for engine break ins, Barrs Stop Leak for radiators. Techron injector cleaner, Dry Gas for moisture in the fuel and the Red Line products. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "dr0309dr" <dr0309@xxxx> wrote: > > My automatic has a VERY small transmission leak. Before I try an > expensive fix, I planned on adding a standard transmission leak > stopping additive, to see if this will work. Is there any problem > with this? Will it hurt something? > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/