Fuchs oil and fuel economy

[blackvx Senior Member Find all posts View Profile Close blackvx]

So I have been using Fuchs TITAN ULTRALUBE 15W40 for some time in my Prado and been getting 13.5l/100 on average, I recently changed oil to FUCHS TITAN CARGO 15W40 on advice from Fuchs that this was a better oil, in my first 2 fill ups since using this new oil I have been getting 12l/100 with no other changes to the rig.

I was pleasantly suprised as I didnt think changing oil would make such a difference to fuel economy.

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

The old oil may have lead to piston rings sticking. If the new oil has more detergent in it, cleaning of the ring groove may be what caused the change.