When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Don't forget to check your coolant level and test for electrolysis
It's already getting hot here in Atlanta and it is smart to stay on top of the coolant level as it will evaporate over time. I believe I checked mine maybe 6 - 8 months ago. I was only 6 fluid ounces below the full mark but if you have not checked yours in a long time you may be low. A few pics attached for your viewing pleasure. It is very simple. Two screw clips, remove the front intake plenum and you have access to the reservoir.
Last edited by Lavrishevo; Jun 17, 2015 at 07:47 PM.
Notice that white/pinkish crud on the sides of the reservoir? That's normal and the reason to check the coolant regularly as it is lost through the reservoir over time. I drive maybe 5,000-6,000 miles a years and usually need to put in a half of cup of coolant.
I think some antifreeze does slosh out of the filler cap. I thought I had cleaned that area up last time I topped it off. I wiped it off again before I took the pic.
Last edited by Lavrishevo; Jun 12, 2015 at 04:08 AM.
Good post/reminder, Lav. We've already have had 90+ degree days in the NorthEast!
With the reservoir hidden under all the plastic, I know I have neglected checking the coolant level. Last time was maybe 3 years ago? LOL As they say, out of sight, out of mind.
As many of you probably know, you can visually check the coolant level without removing the air intake. Just bend over and look down between the engine and the radiator. Use a flashlight (my Iphone works well, phone is just ok but an outstanding flashlight) and you can clearly see the level through the white plastic piece. This way, you only remove the air intake if you need to add coolant. Also, it gives me something to do while filling the car with gas.
As many of you probably know, you can visually check the coolant level without removing the air intake. Just bend over and look down between the engine and the radiator. Use a flashlight (my Iphone works well, phone is just ok but an outstanding flashlight) and you can clearly see the level through the white plastic piece. This way, you only remove the air intake if you need to add coolant. Also, it gives me something to do while filling the car with gas.
How often is it recommended that you change the coolant? I believe mine has Toyota red from the last TB/WP job done at the dealer. Or maybe it is pink. I honestly don't know for sure. Looks more red then pink.
Last edited by Lavrishevo; Jun 17, 2015 at 11:16 AM.
So, I answered my own question. I totally forgot about doing an electrolysis test on the coolant with a multimeter. What a great way to test for breakdown. I'm flying to Ft. Lauderdale for the day but when I get back in the evening I'll test mine and post results. Here is a video explaining the test. Feel free to post your results too. Looks like anything over .3 volts means time to change the fluid. Don't forget to use distilled water as tap water contains minerals that promote electrolysis.
So, this is interesting. I performed the test on my car and with the car off I am getting 0.1 volts which is great. With the car on it was ranging from 0.4 to 0.2 volts depending on where I move the lead in the coolant reservoir tank. Not in the radiator directly .3 volts is the sign to change the coolant from what I am reading. If anyone else wold like to try this test it would be helpful for reference.
My coolant currently has 42,000 miles on it right now. I am thinking between 40k and 50k might be ideal to flush and change the coolant.
The main reason for today’s vehicles having so many cooling system failures is that the engine and cooling system are made up of dissimilar metals like iron, steel, aluminum, copper, brass and even plastic. The aluminum is the softer metal and most cooling system components are manufactured from it. Because it is the softest (and extremely conductive) metal in the system it is the most vulnerable and prone to failure due to electrolysis, erosion and corrosion.
Last edited by Lavrishevo; Jun 18, 2015 at 02:18 PM.
I think some antifreeze does slosh out of the filler cap. I thought I had cleaned that area up last time I topped it off. I wiped it off again before I took the pic.
You can wipe that crud off as many times as you like but it is going to reappear. That is the nature of the coolant that Lexus uses. It accumulates on the outside of the reservoir. Any owner can look at his/her reservoir and see the same thing. The coolant must be topped up on a regular basis for this very reason.
Don't forget to check your coolant level and test for electrolysis
