What kind of oil do you use? Synthetic or Regular?

Also, if you use Synthetic how often do you change your Oil?

 

Motorcraft Synthetic Blend 5w-20... Change every 4-5K miles...

 

Penn synthetic, every 4500.

 

Always used regular Quaker state or valvoline. Engine is still pulling strong at 141,000.

 

Motorcraft Synthetic Blend 5w-20 and a Motorcraft Filter every 3K. I prepiad for a 3yr-35k servive package when I bought my truck. After that it will get Mobil One full synthetic 5w-20 and a Motorcraft filter.

 

i use regular oil either 5W-20 or 5W-30 and i use either a Fram or Motorcraft oil filter. If i am going to be driving it hard or towing nething during that time i will use the recommened 5W-20 and a motorcraft filter. I think 5W-30 works fine and it is a lot easier to find.

 

i think i might switch to a synthetic blend from here on out when i change my own oil

 

Mobil 1 Extended Performance

 

I know that I am ignorant on this subject, so don't laugh. What are the advantages of a synthetic oil over regular oil?

 

Castrol Syntec 10w30 (faithfully)