Originally Posted By: threeputtpar
Originally Posted By: zeng
Originally Posted By: Twomazdas
Recently bought a 2011 Mazda Tribute GT with 3.0. It has 102,000km and appears all service has been done at the Mazda dealer. Invoices indicate 5W20 dino oil from the prices charged. I was thinking a Synthetic Blend like Mobil 2000 when I do the first service at 105K. Any suggestions or thoughts. In the last week zi have done a flush of the PTO/Transfer Case ,with a pump ,used Lucas
75W140 but it seems noisy so could be costly. Also did a transmission fluid change and added bottle of ATP 202 along with the new LV fluid, seems smoother with firmer shifts..
Not sure if this 140 viscosity grade is clearly stated in your manual , I would be hesitant with a 140. Maybe it's just me.
Actually,
Ford US has always speced a 75W-140 for the PTO on their 4WD optioned vehicles. They have also gone to specing it for rear differentials for quite some time. The rear diff spec was due to some poorly made gears that whine at certain speeds, so their Band-Aid was a thicker fluid.
Threeputtpar , thanks for the heads up.
IIRC ,xxW-140 gear oils are preferred where gear linear speed varies from 300 to 700 feet per
minute .
Most transfer gears of 4WD moves in thousands of feet per minute , rendering a xxW-140 too
viscous to be suitable IMHO.
Anyway, to each his own.