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Ok guys, heres what I have. Its a 2000 F-150 4X2 with the 4.2 L V-6 with about 125k miles. I drive it about 32 miles round trip to school 5 days a week. I have been running the Motorcraft 5w20 and changing it at 5k, but have noticed that between oil changes I use about 3/4-1 qt. Is this amount...

Hello everyone. I am working on a school project where we are analyzing some oils for aromatic content, and we are comparing them to some well known engine oils. The problem is, I cannot find published numbers anywhere for the total aromatic content of any of these oils. I e-mailed Castrol, but...

Hey everyone. First, I want to tell everyone thanks for the great information in this forum. I have learned so much. I know there is still a ton of information out there. Here is the question. I have a 1992 Ford Ranger with a 2.3l four cylinder. It has 132,000 miles on in right now. For years I...