I've been searching for info the on this, but it's giving me a headache.
Background - my 98 Sienna van has passed thru 200 miles w/ 16oz (not 12) of Neutra131 in the crankcase along w/ new Rotella 15w40. I'm thinking once I hit 400 miles or so that it was be good to do a quickie flush to attack the softened junk (I would put new (cheap) oil in it for the flush).
Question - is there likely to be any real difference between running Gunk flush for 20 min or Amsoil flush for 20 min or BG Purge for 40 min? I realize their solvent chemistry varies, but do any of these truly do a better job in this one shot hit than the other? (ie, if the benefit between these is only marginal, then I'll just pick up the cheap Gunk)?
Thanks!
(btw, I used the BG Purge for 40 min when my Sienna was at 62k - I had told a Toyota mech about my sludge worries, and he said to run BG for one hour - I chickened out after 40 min - the stuff smells like Pine Sol and kerosene). My van presently has possible gummed rings - thus the Neutra run.
Background - my 98 Sienna van has passed thru 200 miles w/ 16oz (not 12) of Neutra131 in the crankcase along w/ new Rotella 15w40. I'm thinking once I hit 400 miles or so that it was be good to do a quickie flush to attack the softened junk (I would put new (cheap) oil in it for the flush).
Question - is there likely to be any real difference between running Gunk flush for 20 min or Amsoil flush for 20 min or BG Purge for 40 min? I realize their solvent chemistry varies, but do any of these truly do a better job in this one shot hit than the other? (ie, if the benefit between these is only marginal, then I'll just pick up the cheap Gunk)?
Thanks!
(btw, I used the BG Purge for 40 min when my Sienna was at 62k - I had told a Toyota mech about my sludge worries, and he said to run BG for one hour - I chickened out after 40 min - the stuff smells like Pine Sol and kerosene). My van presently has possible gummed rings - thus the Neutra run.