i'm a mechanic, so i probablly over maintain my cars. but my grand caravan 3.3l gets a new filter, gasket and fluid twice a year (about every 7500 miles). and i hope you ment 175 in lbs, 175 lbs is like truck lug nut torque. i wouldn't recomend you try putting 175lbs on tranny pan bolts, they'll strip at about 25lbs