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GUIDE : Heater Matrix Bypass Valve Mod When coolant is being pumped around the engine, it reaches the back of the cylinder head and has two potential paths - back to the water pump or through the heater matrix. This is all good and well except for one small fact, you might not have your...

Comment The paper gasket you show being fitted to the thermostat housing isn't for use on a supra .. the rubber seal is the only gasket that should be fitted Response Part of that awful universal kit I was given - skip that stage then guys, thanks Ed

Step 15 - Pop a funnel in the rad neck (picture 1) and prepare to add your 4life. The second picture shows the rate at which I poured the coolant in - nice and slowly and pause regularly so any trapped bubbles escape. The less you introduce now, the less you have to disperse later so nice and...

Step 11 - When fitting pipes/clips back on, a small dash of fairy liquid can help - especially if they are a tight fit. Don't go overboard and try to ensure you don't get much/any in the coolant system. Second picture shows me smearing some on the silicone hose before fitting the clamps...