– Get in the swim use Amsoil.
Fuel economy improvements are additive.
In other words you get a percentage improvement in each case where you switch to better component lubes.
For-instance, you get a 3-5% for switching the motor to premium Amsoil Synthetic, 3-5% for switching the transmission and 3-5% for switching the differentials.
So this means a 9-15% total improvement.
Other steps can add even more like the use of a fuel treatment periodically. 2-6%.
All in all, you can hope for up to 30%.
Of course you still get the other benefits of superior lubes, such as, longer lasting transmissions and motors, as well as, the opportunity for long oil change intervals — 25,000 miles.