Sorry to bump this but I'd just like to say I just changed my oil and put in RP's 5w30 with a Motorcraft FL-820S
I've never changed the oil myself until now but I wanted to know if anyone else has had to put 6 qts in their engine. this is strange to me and seems like too much but it said the capacity in the manual was 5.8 quarts... Also, how often should i change out RP? Every 5000 miles?