Blue Devil Transmission Sealer (16 oz.) - 6 Pack

Blue Devil has built a reputation around one idea: restore the seal instead of replacing it. Their Transmission Sealer works by revitalizing dried, cracked, and shrunken rubber seals and gaskets inside your transmission, bringing them back to their original size and flexibility. This six-pack of 16-ounce bottles gives you enough product to handle multiple vehicles or keep a shop stocked.

The formula is a pour-and-go application. You add one ounce per quart of transmission fluid, then drive normally. Within one to two hours of drive time, the sealer circulates through the system and works on the affected seals. It is compatible with both automatic and manual transmissions and works with all transmission fluids, so you do not need to worry about matching formulas. The product contains no petroleum distillates and is non-clogging, which means it will not interfere with the small passages and valves inside your transmission.

If you manage a fleet or a shop, the six-pack makes practical sense. Transmission leaks are one of the most common drip complaints, and having this on hand means you can treat the issue quickly before it turns into a bigger repair.