MotorSilk® Engine Oil Treatment

If you don’t shake the bottle vigorously the boron stays at the bottom and the carrier is dispensed looking greenish! If you want reviews there are laboratory results online such as Altboron.com proven reduction in friction and wear!

This is an amazing product. I have a 2002 F150 Lariat SuperCrew Fx4 w/5.4L has engine and 210,000 miles. I have used full synthetic since i bought it used at 165k miles. I poured this in and i literally heard the engine quiet down. The truck just felt stronger and more responsive. I followed the instructions specifically stating to replace oil filter as this will clean the engine etc. i don’t get over just how smooth the engine runs now and how quiet it is. I highly recommend this product

Good product Good price

I have been restoring classic cars and building hot rods for many years. Motor Silk works exactly as advertised. You can hear and feel the engine and transmission run much more quiet and smoother with increased performance. Definitely worth the money!!!

I have been purchasing Motor Silk for over 20 years. It was always a white milky slippery liquid. My last purchase it was a clear light green and not slippery at all. I didn't realize it until I already added it to the engine with an oil change. Motor Silks web site and phone do not work. Now I am out the cost of the product, 6 qts of oil and a filter. I am afraid to start the engine.

I have used Motor Silk for over 20 years and am very enthusiastic about it. I bought a 1985 used Porsche with about 150,000 miles on it. I started using Motor Silk, replacing it every 100,000 miles. I got to 485,000 miles on the original engine. Then the transmission/transaxle gave out and it would have cost me about the same to fix it as I purchased it for. A few months earlier I had a smog check and passed. I asked how close was I to the smog limit, and was told, no problem, the engine is burning clean!!! I'm sold.

I've owned many high mileage vehicles and used way too many oil additives to keep them running. While those vehicles did run until sold or traded in, I never noticed a difference in power, responsiveness or idle...until now! Have driven my Jeep over 1,000 miles with MotorSilk in the crankcase and it's made a huge difference. The 160,000+ engine now has a new lease on life and I'll add this every 50,000 miles going forward.

I noticed a slight impovement in the vehicle "noise" the engine makes. I assume since I did nothing else but add these additives that this is the reason why. My engine's chain was making a loud noise, it has since rarely made the noise. My mechanic said this should save my engine and extend its life, I am hoping that is the case.