I know this has been talked about, but I went to fill the suburban the other day and noticed the low sulpher(SP?) warning on the pumps. Its obviously happened so whats everyone doing for extra lubrication? My uncle has had his dodge cummins since new (92) and ran a little ATF in every tank and never had a problem. So I think im going to do this till I see a better and possibly more cost effective alternative. On a side note the suburban does seem to be starting alittle easier in the mornings.