Hav an 04 d2 , and leaking psf from steering box. I wanna know whats the best psf to use and the best alternatives psf. Says texaco in the owners manual , but since they went out of business i dont know what brands to get... Oh and my steering box is leaking on the top middle bolt, where the bleeder screw is.... Is this a broken o-ring ? Also wanted know if i can top my coolant with dexcool by prestone... Which is gm approved :beer: thanks in advance!