Is Lucas Oil Stabilizer Safe to Use in All Engines?

Lucas oil stabilizer is safe to use in all types of engines. As of 2015, Lucas produces two kinds of oil stabilizers: pure synthetic stabilizer for smaller or newer vehicles, and heavy duty stabilizer for larger, older ones.

Drivers should begin using oil stabilizer in their vehicles after the break-in period recommended by the manufacturer. The stabilizer needs to be added with every oil change, using a ratio of 20-percent stabilizer to 80-percent oil. Drivers can also use the stabilizer to improve transmission performance, using a ratio of 25-percent stabilizer to 75-percent oil in a manual transmission, and 50-percent stabilizer to 50-percent oil in a differential.