What oil grade best for oil burning 10 yr old car w/200+K miles in Fla? Uses qt./200-300mi.?

I would try a 20W50 oil, and check the oil every time you fill the tank with fuel.What oil grade best for oil burning 10 yr old car w/200+K miles in Fla? Uses qt./200-300mi.?
IF YOUR USING A QT OF OIL EVERY 200-300 MILES, YOU HAVE A MAJOR PROBLEM. PISTON RINGS ARE PROBABLY WORN OUT, MAIN AND ROD BEARINGS OF YOUR CRANKSHAFT ARE CLOSE TO FAILING. A HEAVIER OIL WILL HELP, BUT IT WON'T MAKE MUCH OF A DIFFERENCE UNTIL YOU A) FIX THE CAR OR OBVIOUSLY B) GET ANOTHER CAR. IF FINANCES ARE AN ISSUE, TRY AN OIL ADDITIVE SUCH AS ';RESTORE'; OIL TREATMENT; IT WORKS WELL WITH OIL BURNING CARS AND SLOWS DOWN THE AMOUNT OF OIL YOU ARE ADDING REGULARLY.What oil grade best for oil burning 10 yr old car w/200+K miles in Fla? Uses qt./200-300mi.?
the cheapest motor oil you can find. walmart has 4, 5 and 5.5 quart jugs pretty cheap. your engine is going to waste it at the same rate whether you put 5-30 or 20-50, it doesn't matter at all. the first number listed has a ';w'; next to it that indicates ';winter'; or how the oil behaves at cooler temperatures (cold engine) and the second number is the viscosity at engine temperature (200 ish). even 20W/50 gets pretty thin at 200 degrees, and it'll blow right by the oil rings on your piston just the same as another viscosity