ok guys I have a 1986 mercury capri 302 4 bbl 5 speed 270000 miles and it uses oil and leaks some. the car is driven very little the last couple years since I got a truck. im thinking either Valvoline MaxLife 5w30 or would Valvoline MaxLife 10w30 be a better choice? or maybe 10w40? the motor is really worn and smokes a little bit at idle and really smokes a lot when u get on it hard. I have another motor to go in it but its not ready yet so just looking to buy a little time. or do you guys think another oil choice would be better? ok my other car is a 2003 ford Taurus with 3.0 v6 not the overhead cam 3.0. the owners manual specs 5w20 and ive been using mobil super 5w20, it has 141000 miles and the motor runs perfect and smooth and uses a little oil, about a quart every 3 to 4000 miles. it has a few small leaks but nothing major. oil pan gasket has been replaced. does Valvoline offer maxlife in 5w20, was thinking to use this also, or maybe another choice. what u guys think about these? feel free to make any suggestions. thanks for any replies