Drunner97
New member
It's crazy that some Toyota dealers have this canned response "It's not recommmended to do a full flush on the 'lifetime' WS fluid" with a sealed transmission.
BS, do the full flush or as some do in increments with a drain and fill. The trans is about 19 qts total.
A few days ago I polled five local dealer service advisors. Three of them had that canned response, one said they don't have the machine to do a flush via the trans oil cooler, and one that did the full flush on my '05 Tundra 4.7 with 118k miles on it.
I towed with that Tundra some hard miles onroad and offroad after the flush, so I'll be going to the Toyota shop that did the flush on the '05 Tundra.
4runner isn't my daily anymore so I'm not in a big hurry to flush it all out. I'll do 4 quarts every 100-300 miles and in a few weeks I'll have nothing but mostly clean fluid. Just those 4 made a huge difference. Otherwise? Yeah, Toyota can piss off on that WS fluid. I'll be doing my Tacoma pretty soon now too because of this.
