If the judge rules that DEX-COOL cases can proceed as class action suits, it would likely follow during trial why the problems primarily occur with certain engines, and, at that, certain engine components - especially if Chevron Oil Co. (Texaco's parent - Texaco supplies DEX-COOL(tm) to GM as factory fill coolant.) is called as a material witness. I suspect once that happens, a number of contingency sharks slathering over the prospect of multi-million dollar awards will find themselves set back on their cans. I'm not a lawyer, but if I were, I'd be looking at the angle of the harder to defend GM decision to use expansion-limited plastic intake manifolds mated to expansion-prone aluminum cylinder heads.