In the transfer attachment construction of a 4WD vehicle, to facilitate assembly by making the retainer attachment bolts easier to tighten, to improve the coupling reliability of the retainer and mount bracket, to make easier the manufacture of the retainer by simplifying its design, to improve yield, and to make it less expensive, the retainer attachment bolts are prevented from interfering with the bracket attachment bosses. The bracket attachment bosses are disposed close enough to the transfer pinion axle center to avoid overlapping between the bracket attachment bosses and the retainer attachment bolts.

High and low speed gears of a vehicle transmission are selectively lubricated by transmission oil flung by a final ring gear. A first oil gutter directs the transmission oil to low speed gears when the transmission oil is flung at low speed. At higher speed, the transmission oil is flung past the first gutter to be received by a second gutter from which it flows to lubricate high speed gears.