Disagree on your thoughts on synthetics. They have proven to me that they actually will consume LESS than conventional oils as they tend to stay at their rated viscosity longer.
Switching oils all the time in an already sludged/older engine MAY cause more consumption and may unplug leaks from cleaning up which new oil tends to do by itself as it's supposed to.
IMO - synthetics win and are less expensive in the long run,
T
_________________________________________
Tom Greenleaf - MetroWest, Boston
Auto Repair Home
SEARCH
WHO'S 
LOG 
yes using thicker oil is the best thing to do on older cars .. because as the car gets older the oil seals go out.U might want to check and make sure it is not your oil seals, no biggy if it is . It's just better to know what is going on with your car:)
.make sure that when you get your oil .. u do not get the synthetic brand .. the synthetic brand is sure to leak through .. even if you have all of your seals fixed .. i dont know why but every car .. i have had does the same thing .. and they were old ! i have had a 98 mustang convertible red v6 , 1992 camero grey v8, and a sunbird v6 white .. all the cars use thick oil :) 
