Did our video help you? If so, consider buying us a beer: https://bit.ly/3feE6tJ In this video, we show you how to flush your cooling system whether it's to rid your cooling system of old nasty coolant or it's to switch to a different type of coolant. The flush was performed on a 3rd Gen 4runner but this technique could be used on any vehicle. *IMPORTANT NOTES* I put up this video and was quickly told by a subscriber that the Toyota red and pink coolants aren't compatible. I called my local dealership, talked with a mechanic and was told the same thing. So, I added a disclaimer at the beginning of the video telling people that you shouldn't mix the two different Toyota coolants, red and pink and I reposted the video. The next day, another subscriber says there's a service bulletin from Toyota saying the red and pink coolants are fully compatible. I did a search and sure as shit, i found the service bulletin saying the red and pink coolants are indeed FULLY COMPATIBLE. Seriously Annoying! Here's the link to the bulletin: https://drive.google.com/file/d/1-CbH2k3aDAsFAkt0BL0d2VaCeXeEDuVw/view?usp=sharing For some reason, the TSB saying the coolants are compatible is no longer available. Maybe Toyota changed their mind about this. This is the TSB number #T-PG010-02 but when you do a search for it, it's nowhere to be found. I luckily saved a copy of the TSB on my Google Drive. I think the best course of action is to just use the coolant that is recommended by Toyota for your particular vehicle. Don't mix them. **Since filming this video, I've learned you only need the heater temperature control knob turned to full hot, BUT you don't need to have the fan on. Turning the temperature control knob to full hot fully opens up the valve and lets the hot coolant flow through the heater core. With the fan on, it draws heat away from the engine and might not allow the thermostat to open fully because the engine isn't reaching full operating temperature. SO, I SUGGEST KEEPING THE FAN OFF FOR THIS PROCEDURE. Here's some stuff you'll need: 1) 8 Gallons of Distilled Water for the flushing 2) Enough Coolant Concentrate or 50/50 Premixed Coolant for your vehicle's cooling system capacity 3) More Distilled Water (Half of the total cooling system capacity) if you are choosing to mix your coolant using a concentrate. *SUPPLIES* *Toyota Red Long Life Coolant Concentrate https://amzn.to/37lyhBL *Distilled Water - (get this at any grocery store) *HELPFUL TOOLS* If you're looking for other tools not used in this video, check out Timmy's Master Tool List. https://www.amazon.com/shop/timmythetoolman?isPublicView=true *Lisle Spill-Free Funnel https://amzn.to/2SnrPFV *18 Quart Food Storage Container https://amzn.to/2Bm3q9X *4 Quart Measuring Cup https://amzn.to/2Gq4a0W *The phone app I use to monitor my coolant temp is Torque Pro. It's only available for Android phones. If you have an iPhone, there are similar apps you can purchase. *If you're interested in buying an OBDII reader that works with Android devices, here's what I got: https://amzn.to/2BeQUsM *And, if you go the Bluetooth reader route, buy this as well. It allows you to turn off the power to your reader so you don't have to pull it out every time. The reader constantly draws a small amount of power and could drain your battery if your truck sits for a long time. https://amzn.to/2WDL4dl **As Ebay Partner Network members, we earn commissions from qualifying purchases. **As Amazon Associates we earn from qualifying purchases.