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Re: REQUIRED coolant additive
It appears to be the bars stuff, it's gritty. Newer owners manuals say to put it in at each coolant change. I thought about changing over to the blue coolant but I don't know what all they've changed in it, and if it is compatible with the old gaskets and pumps. I'll still change it at 30,000 like reccomended regardless of what color it is
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2007 GS 450h-Active Stabilizer/Radar cruise
1994 L Blue 3.70 VTD
ASE Master Automobile
ASE Advanced Level Specialist
Toyota Master Diagnostic Technician (former life)
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