This stuff is called Prolong Engine treatment and they have transmission treatment too.

and if your car is under 100,000 miles and under 10 years old they guarantee if your engine fails due to a lubrication problem they will replace the whole thing (same thing for the trans)

This stuff really works well heres what it says on their website

Product Overview

• Reduces harmful friction and excessive heat in both gasoline and diesel-fueled engines
• Formulated with AFMT™ (Anti-Friction Metal Treatment) advanced technology
• Helps protect the engine in the event of oil or coolant loss
• Helps restore engine efficiency to optimize fuel economy
• For both new and older, high-mileage vehicles

Prolong Super Lubricants Automotive Engine Treatment

And heres the one for the transmission. i threw it into mine and it stopped shifting hard from first gear to second and it got better and better over time

Product Overview

• Formulated with Prolong's AFMT™ advanced technology
• Reduces extreme friction and internal temperatures
• Promotes smoother, more responsive shifts
• Compatible with all common transmission fluids and gear oils

Prolong Super Lubricants Automotive Transmission Treatment