I use a quart of Rislone at every oil change which is every 3000 miles maximum. I do this for all three vehicles (listed in gallery) and have been doing it since 1977 when I got my new '77 F100. I wouldn't hesitate to use it in the new Fords that recommend 5W-20 oil. The folks at Rislone say the base oil they use is about a 5w20/25 and that you can use up to 25% of the crankcase in Rislone. My last oil change on the F150 I put 4.5 qts oil and 1.5 qts Rislone. IMHO it is great stuff. I just put some in a little old fashioned oil can and am waiting for the next squeaky door hinge in my house to use it. I guess I am a Rislone nut.


INLINE SIX POWER! '95 F150 XL
300 Cubic Inches of Low RPM Truck Torque! And twin-I-beams too!
"Drive a stick young man! There'll be time for automatics when you're old and unable."