I think it was that "BARR'S" stuff, but cannot recall exactly... that was back in 1998-1999. Next time I am in a automotive department I will look, because they still sell it.

The car never overheated and never was coolant in oil or oil in coolant, but it had started burning oil (like after it would idle for awhile and you pull out - which were valve seals) but then the spark plugs would get wet with coolant and it would miss.

Despite that, the car was still so smooth. Inline 6-cylinders are so impressive. Its just too bad Toyota did not put better headgaskets/valve seals in those 2.8L I6 engines.