Lingering Coolant Problems

[Hiluxforever]

Oh, gotcha. I'll bet it was from getting hot, which would have been caused by a leaky/cracked radiator (replaced). I have checked all the other areas for head gasket failure(s) and everything checked out fine.

Timing cover uses a similar type of sealant. So I would watch that as well.

Ironically I am still on the factory hoses even though I am in my 2nd radiator replacement since nothing decent was available when mine failed initially