I have a 2021 Tundra i know it calls for Dexron3 ATF. I work in small tire dealership we sell PureGuard Dex3/Mercon which i can grab a few qts for free. Also i see autozone has mobil1 synthetic atf on clearance for $3 per quart. Looking at data sheets for both of these theyre sort of similar other than the Brookfield Viscosity which is 20,000 for the PureGuard vs 10,040 for Mobil1. Regular viscosity index is 188 for PG and 176 for Mobil1. Am i just overthinking this stuff by checking these numbers out or is the 20,000 BI on the high side - would it cause more stress on the pump or anything?
Question on these Dex3 fluids for Toyota PS systen
- Thread starter RH43
- Start date
It's fine.
And viscosity index?
And viscosity index?
188 for pureguard
176 for mobil1
No I meant how does that relate to this?
If you get the stuff from work just change it sooner vs the synthetic Dex3. I would siphon and refill every 2 or 3 oil changes w the reg Dex is all, I wouldn't overthink it too much.
FWIW I put Valvoline Dex VI in my grandson's Lexus ES 330 (20 yrs old, 100,000 miles) and it works fine.
Yeah a Dexron-VI fluid is better in every way although the Mobil 1 is also a good alternative.
If OP has a 2021 Toyota and if Dexron-IV is better than Dex III for the PS fluid fill, then why would Toyota not have spec'd WS ATF fluid?
They can’t “specify” Dexron III after the license is no longer available.
Dexron VI is more shear stable and much more resistant to oxidation. It is backward-compatible with the previous licenses and overall is superior.
Dex6 can be used in any Dex3 and I would recommend it as a minimum spec. I would not use a Dex3 fluid in anything important.
I have maxlife atf in all 3 of our Toyotas with regular power steering. 95 Tacoma, 03 Camry, and 05 sequoia. Seems to be just fine. Is Dex 3 really better in there? I had a few gallons in the garage and did a flush on all 3.
I use AMSOIL power steering fluid in my 2016 Tundra.
It’s straw colored like the OEM fluid. Viscosity is about the same as Dexron III.
For half a pint pint or so of fluid to change each time you extract the fluid from the reservoir, this isn’t an area where I try to save money. The AMSOIL is about $8 a bottle/pint. So, what, $4 for each time you extract the fluid?
It’s straw colored like the OEM fluid. Viscosity is about the same as Dexron III.
For half a pint pint or so of fluid to change each time you extract the fluid from the reservoir, this isn’t an area where I try to save money. The AMSOIL is about $8 a bottle/pint. So, what, $4 for each time you extract the fluid?
Curious why you don’t change all the fluid instead of just what’s in the reservoir.
I did, but flushing the fluid is a huge pain, difficult to do without making a mess, so, I simply remove and replace the fluid in the reservoir now. Each oil change, I’ll use the fluid extractor, empty the reservoir, refill, idle the truck for a bit and repeat.
I cap off the return nipple and put the extractor hose right into the return hose and suck the fluid out, crank the wheel lock to lock also to get the rack flushed. Keep refilling reservoir so the clean fluid flushes through until it’s coming out clean. Reattach the return hose and top off, bleed it. But not as easy.
This is what I do, but into a precariously placed small tupperware that I have the extractor hose in the low side of. It works, but not something I want to do but every 50k+ comparatively.
I use Maxlife in the steering and transmission for my Taco, seems fine.
For the PS, I just remove the return line and put a nipple there which has a long hose to go to a 5 gallon container. I start the truck and keep the reservoir full while running and it flushes in about 10 seconds. I did add a bottle of Lubegard power steering conditioner to it too for giggles.
For the PS, I just remove the return line and put a nipple there which has a long hose to go to a 5 gallon container. I start the truck and keep the reservoir full while running and it flushes in about 10 seconds. I did add a bottle of Lubegard power steering conditioner to it too for giggles.
