I've just found this forum and have been reading for about 4 hours now! Sheesh! So much great info., but my eyes are boggled.
I plan on using Auto-Rx on my '93 Toyota 4x4 V6 Xcab (114K) and then switching to synthetics with the possibility of using a remote "super" bypass filter. Just wanted to say here that I used BG44K Fuel Treatment and the truck is humming. It started smoothing things out within 20 miles. Costs about $20 per can.
Hugh
Hugh