ENGINE OIL ADDITIVES

Engine Oil Stop Leak
HOME / PRODUCTS / ENGINE OIL ADDITIVES / Engine Oil Stop Leak

Engine Oil Stop Leak

Lucas Engine Oil Stop Leak is an all new formulation of Lucas additives and very specific base stocks designed to stop seal leaks in engines!

Key Benefits

  • Compatible with petroleum, semi-synthetic and full synthetic motor oils
  • Renews worn seals with no risk of damage or eventual corrosion
  • Reduces engine noise and oil consumption, while raising oil pressure
  • Contains no harmful solvents
 

Packaging

Product # Size Weight SDS
#10278 1 Quart (Case of 12) 25 lbs Safety Data Sheet
#10279 1 Gallon (Case of 4) 33 lbs Safety Data Sheet
 

HEAR IT FROM OUR CUSTOMERS

The leak had disappeared completely in a matter of days.

I have a 1987 Ford F150 with over 260k miles. It developed a rear main seal leak and not worth the money to have it replaced on a vehicle this old. Put the whole bottle of Lucas Oil Stop Leak in my next oil change and the leak had disappeared completely in a matter of days. The truck is also running smoother and the inline 6 engine sounds better than it did before.
Red S., NC

I noticed a difference almost instantly.

Last month I purchased a used Ford Explorer off a friend who was moving. I did my own regular routine maintenance fixing this, replacing that. Well being an older vehicle I decide to use your Engine Oil Stop leak for the first time ever in the crankcase. Now I was expecting a slight difference or improvement but instead I noticed a difference almost instantly. The way the vehicle turned over and then idled. I wouldn’t have called the vehicle noisy in the first place but I had to double check to see if the vehicle was actually on and the oil pressure gauge to my excitement slowly started to climb. I have always used your products in the past and will continue to do so Canada loves Lucas!
Damian M.

Results were apparent the first day…

I have an old 8000 lb fork lift with a 3-stage mast. It was leaking like a sieve. I would keep a pan under it and dump the hydraulic oil back in through a filter every time I wanted to use it. I was expecting to pay more than $1000 to replace the seals. A guy at a local autoparts store recommended Lucas Hydraulic Oil Booster and Stop Leak. I dumped in an entire bottle. The reservoir holds more than 5 gallons. Results were apparent the first day and they have been even better since. We used to have to dump a trail of cat litter to soak up the trail of hydraulic oil. Now there is zero trail. It's great stuff!
Den

No More White Smoke, No More Oil Burn!! Works as Advertised!!

My 2006 Chevy Silverado developed a valve seal leak do to my improper maintenance practice at the time... There would be a puff of white smoke out the tail pipe every few mornings when I'd start my truck from oil seeping into the combustion chamber. I put Lucas Engine Oil Stop Leak in. After a few days like the bottle says, no more white smoke, no more oil burn!! Works as advertised!!
Kyle S., IL

This stuff is amazing. Will be adding a quart with every oil change.

I’ve got a 2005 GMC Savannah with almost 300k. Started using alot of oil. Needed a liter every 500km. The oil pressure would drop so low at idle that the light came on. 3 min after adding a bottle of this Engine Magic you call Stop Leak and my oil pressure is right back to where it should be. This stuff is amazing. Will be adding a quart with every oil change.
Aaron M.

RELATED NEWS

Lucas Oil Named a 2026 Community Impact Winner by Culture of Good, Inc.

May 27, 2026

Lucas Oil Named a 2026 Community Impact Winner by Culture of Good, Inc.
Lucas Oil Expands RCR Partnership in 2026, Returns as Primary Sponsor of Kyle Busch’s No. 8 Chevrolet

May 11, 2026

Lucas Oil Expands RCR Partnership in 2026, Returns as Primary Sponsor of Kyle Busch’s No. 8 Chevrolet
CHASE MATTHEW + LUCAS OIL EXTEND PARTNERSHIP THROUGH 2027, POWERING GLOBAL EXPANSION

April 1, 2026

CHASE MATTHEW + LUCAS OIL EXTEND PARTNERSHIP THROUGH 2027, POWERING GLOBAL EXPANSION
solid-white-shield