Rear differential fluid change.

Doing the fluids on my 06 Tacoma for the first time. Prior maintenance was performed by a shop for the previous owner.

Fluid in the transfer case and rear differential look they were recently changed -- engine oil colored and thick. Fluid in the front differential and the manual transmission look like they've never been changed -- clear fluid but old and dirty. I'm replacing everything with synthetic Valvoline 75W90. Drain plug on the front differential was a beast to get loose, the others were no problem at all.

 

Go with redline for the trans.