How Many Coolant Block Drains IS350?

[Gebo]

Getting ready to change coolant in '09 Lexus IS350. Are there 2 block coolant drains or just one? I don't have the car yet and am
hoping someone will know to help save me some time. It's just so low to ground even on ramps and my big ol belly has a hard time
sqeezin' in if I try and use a creeper.

 

[Speedbird001]

Is this basically the same as the Tacoma 3.5L V6? If so, the Tacoma has two; one on each side, about center line, midway back; underneath the exhaust manifolds... Passenger side requires some wiggling.... had to use good lighting to find it, then by feel to actually losen as your hand and the tool blocks sightline. Drivers side is worse; success actually by pulling back the fender liner a bit and reaching thru drivers side wheel well plus a whole fistful of extensions and u-joints.

 

[Gebo]

Looking forward to it. My other cars are fairly easy with enough wigglies and extensions.

 

[benjamming]

Why do you feel the need to remove the block drains for just a little bit more coolant exchanged? Wouldn't a simple (& less risky) drain & fill more often be prudent?

 

[cptbarkey]

I am in the Drain/fill 2x camp. Not worth the hassle.

 

[Gebo]

I guess the same reason I change my oil filter every time I change my oil. Lol

You’d be amazed at how much more coolant comes out. Well, at least on “my” cars.

On the other hand, I only D&F “my” AT’s.

 

[benjamming]

Not to take the point too far, but how much more do you get out?

 

[KrisZ]

Not to take the point too far, but how much more do you get out?

With a block drain, probably almost all of the coolant will be drained. So quite a lot when compared to just draining the radiator, which usually drains about 50% or less.

 

[Gebo]

Not to take the point too far, but how much more do you get out?

Depending on the engine, but a little less than 1/2 total capacity. Generally speaking about a gallon.

And I make sure my heater is turned to MAX heat.

 

[paulo57509]

There are drains on each side of the block. You might only be able to reach the one on the rear bank.