Frequently Asked Questions

• Will Bar’s Leaks Transmission Stop Leak clog my filter?
• Will Bar’s Leaks work in all types of transmission fluid?
• How does Bar’s Leaks Transmission Stop Leak work?
• How much do I install?
• If first application does not completely stop leak, may I add another bottle?
• If I install more than the required amount, will it work faster or better?
• How long does it take to start working?
• Can Bar’s Leaks Transmission Stop Leak be used in a standard (manual) transmission?

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Will Bar’s Leaks Transmission Stop Leak clog my filter?

No. Unlike our cooling system product, Bar’s Leaks Transmission Stop Leak has no particles to plug the leak, it works chemically to stop leaks in gaskets and seals.

Will Bar’s Leaks work in all types of transmission fluid?

Yes, Bar’s Leaks is one of the only transmission stop leaks that is compatible with all petroleum-based transmission fluids including synthetics.

How does Bar’s Leaks Transmission Stop Leak work?

After time, transmission seals tend to dry out and shrink. Bar’s Leaks revitalizes these seals and makes them soft and pliable again.

How much do I install?

Our T20L (15.5 oz.) is designed for one bottle to be installed in a passenger car or light truck. For larger systems use one bottle for every 8-10 quarts of fluid.

If first application does not completely stop leak, may I add another bottle?

Yes, you can install a second application for hard to stop leaks. If your leak still persists after a second application, then mechanical attention may be required.

If I install more than the required amount, will it work faster or better?

No, we have formulated our product to work best at the suggested dosage amount.

How long does it take to start working?

Bar’s Leaks Transmission Stop Leak starts working the minute you install and start driving the vehicle. You will usually see results in about 250 miles or three (3) days of driving.

Can Bar’s Leaks Transmission Stop Leak be used in a standard (manual) transmission?

Yes, you can use this product to help stop leaks in a manual transmission as long as it uses an automatic type transmission fluid. Use ½ the bottle for most applications.