As LadyFitz pointed out ZEP HTFP is the same product as RMP3. Lowes was rebranding the RMP product and it was manufactured by ZEP for them.
For whatever reason Lowes discontinued the RPM product line. I have heard some people say they are now seeing ZEP HTFP being sold at Lowes.
'98 Gulf Stream Sunsport 325, 7.5L Banks Power Pack, Koni FSD's, Air Bags, ReadyBrute Elite,
2000 Honda Accord