T-Bird 4.6L w/ hi mile oil?

Messages
463
Location
California
I'm going to be changing the oil for a friend. She drives a 95 T-Bird with the 4.6L SOHC engine. It has about 150k on the clock. I'm thinking of going to Wally's and geting Pennz 10W-30 High Mileage oil and a Motorcraft filter. Do you experts agree on this? The car does have some consumption issues. It doesn't visibly smoke and I see no leaks on the concrete where it's parked, but the oil is going somewhere. What say you? Thanks.
 
Messages
43
Location
NY
I can bet the reason the Tbird is consuming oil is because the valve guide seals are shot. 94 - 95 4.6s are notorious for it. Alot of people seem to say that thicker oil won't really help, the only thing to do is replace the seals. Also, in my experience, my Tbird really does not seem to like thicker oils, I'm actually thinking of going with Ford's recommendation and switch to a 20 weight.
 

Tremo

Thread starter
Messages
463
Location
California
The car will be driven in the California Sierra foothills. Coldest winter nights are about 25 degrees F. Is the 10W-30 still OK?
 
Top