Help! 3rd gen coolant

Please help clear something up for me.

Did a drain and fill on my 2016 Tacoma, and refilled with 50/50 LLC (Red cap) that I mixed.

I thought that LLC and SLLC were interchangeable, one just being premix and the other being concentrate. I'm reading now that they are not the same.

I don't care about the shortened interval as I'll change it again at 100k miles anyway (currently has 75k)

My question is, is there risk of damage by using the LLC and not the SLLC?

It ended up only taking less than a gallon of mixed LLC, because i could not locate the block drain on the engine and was only able to drain the radiator and reservoir. if anyone knows where this drain is that would be extremely helpful as well.

UPDATE: LLC is safe for 2GR-FKS, with a reduced interval but I will flush the system and replace with SLLC. Drain plug has been located on the passenger's side of the block.

Will update with pictures after I do the flush

 

If the manufacturer is saying it is not compatible, I personally would get it all out of there and start with whatever Toyota specs for the coolant. Some others opinions may vary, but on some vehicles coolant specs are very particular (GM) and will do damage. I do not know if toyota is one of them. My rule of thumb is that transmissions and coolant I just get the oem fluids.

I am sure there is someone else that will have more knowledge about this subject than me.

 

Thanks for your reply. Toyota Long Life Coolant is a Toyota OEM fluid. It says on the bottle it meets/exceeds all Toyota Warranty specs. However the owners manual calls for Super Long Life Coolant, and I thought the difference was only in there supposed change interval requirements and that one was concentrate and one was pre mix.

 

Drain and fill with SLLC and call it a day.

 

can't completely drain what's in it, because i can't locate the drain port on the engine block. Draining the radiator only gets out about 3/4 of a gallon and the manual says it has almost 2.5 gallons in it.

Same problem with doing a flush with water as you'll end up leaving almost 2 gallons of water in the block.

 

I would probably just drain and fill with the SLLC.

 

I found this schematic online, its described at the 3.5 in the Rav 4 not sure if thats the same engine or not but may be a start

 

Thanks i looked all over the right side of the motor and could not locate a drain cock like on previous years. There was one bolt that looked to be pipe thread but there was no drain cock. The schematic I found for the 2gr-fks online only showed one drain port on the block, not those additional but i will check to see if they are there.

 

I wouldn’t sweat this much. Doubt you're hurting anything. But save the hassle and expensive of the SLLC. Instead, get some Valoline Zerex coolant. It's a silicate free, P-HOAT formula which is exactly what SLLC is. Perfect pink color match too.

Do a couple of DAFs a couple days apart and you're fine.

$13 for a premixed gallon and available at Walmart.

 

Thanks, i don't mind buying OEM toyota if for nothing more than peace of mind. Not saying the Zerex isn't good, I used that in my jeeps before jumping on the Toyota bandwagon.

I did find a TSB from 2002 saying red could be used to top off pink and vice versa, but that doesn't say whether or not Red Long Life, is safe in Newer vehicles that came with Super Long life.

So I'm still at a loss.

 

I think your safe. Mixing LLC and SLLC will only lower the life expectancy of the SLLC.

LLC = 2 years/30k miles
SLLC = 5 years/100k miles

 

Not sure if this helps you find the drain, but in some prior gens its not just a bolt in the block but more of a spout with a bolt on the end or on top of it.

 

#4 on the image below is where the drain should be.

 

yep that's the style i was looking for, couldn't locate it at all. The technical manual for the flush walkthrough only has a generic blueprint like what was posted above. If it's on there it must be buried. I even felt under the alternator and AC compressor and couldn't feel anything.

 

IcyHott posted the schematic I was using, and I could not locate a drain port.

 

I just went out and double checked again, there is nothing located in front or just below the oil filler neck like shown in that diagram.

 

FYI - It is useless to change coolant, if you can't drain old completely out. You are just contaminating new with (old) that is left in block.

 

Would you rather have all old coolant, or some new and some old? Unless you can point to the block drain on your 18.

 

On my 2015 Lexus GS 350 f-sport awd with same engine (3.5l) there is threaded drain plugs on the side of block. Never looked at my 18 Tacoma, yet.

 

Is the Toyota coolant similar to dexcool?
I noticed it’s the same color.