Synthetic Oil Users - At what mileage did you switch?

2000 or so, post-breakin.

 

x2

 

Switched to Mobil 1 yesterday at 65k mi. Butt dyno instantly noticed an increase of no less than 12-15mpg.

 

same here

 

With all of my vehicles I switch over to synthetic at/near 1,000 miles. With my current Tacoma I switched over at 1,200 miles.

 

done with Toyota care and about to start doing the changes myself.....going to mobile 1 syn. and Toyota filter.......I've seen a lot of talk about it and not to get off the op's thread but how much oil does it really take changing the oil and filter?? I've heard multiple answers!

 

5.5 quarts for the 4.0

 

I changed the front and rear differentials and the transfer case to full synth at about 30K miles when the owners manual recommended an oil change. Couldn't tell one bit of difference in how the truck drove.

The engine gets regular old dino oil and I have no plans to go to synth. IMHO modern oils are more than good enough and when changed on a regular basis there is no need to pay the extra.

 

I changed my 2.7L to AmsOil at 68,000 miles, the first oil change after I bought it. I run AmsOil 12 months as recommended, since I don't drive over 25,000 miles in a year. I have been using AmsOil for 20+ years with excellent results.

I also changed the transmission, transfer case and differentials.

I've never had any problems with AmsOil, it's excellent.

My transfer case has purple oil in it, royal purple I assume. The transfer case shifted better immediately with Ams Oil.

I've found the best way to keep the transfer case shifting easily is to exercise it once a week whether you use 4wd or not.

 

Changed mine to synthetic at the dealer at 1,000 miles. Been running M1 5w-30 ever since.

I should really do a UOA on this one to see how the truck likes it.

 

This when it happens

 

The dealer said my 2014 came with it in it already.

 

I had the dealer dump the pan and put in amsoil the day i bought it.Been using it ever since along with a BG MOA kit every 5k...

 

I switched to Mobil-1 0W-20 at 45000 miles. Still using Toyota filters. I use Mobil-1 because it's usually on sale at Walmart (plus my daughter in law's discount).

 

switched mine to synthetic at 160,000 miles. No worries.