ZDDP?? If you Own a Jeep 4.0 or Older Vehicle Did You know?

Anyone with a 4.0 or older motor needs to read this!! The flat tappet camshaft on a 4.0 or any flat tappet camshaft requires ZDDP (zinc) for wear protection and nearly ALL oil companies have removed Zinc from their oil because newer cars have roller cams and zinc was causing premature cat failure. Many Jeepers and Clic car owners including myself have been running Rotella T 15w 40. It's cheap and has the 1100ppm ZDDP that our beloved straight sixes need. There are a few other oils out there that have Zinc (Royal Purple is one) and also some additives (Lucas) but the Rotella seems to be the cheapest. Just thought I would share this so we can keep our jeeps running strong!!!!