Heya Rick, I use them on my HSCS engine, see the pic. http://www.oldengine.org/members/hammink/web/oilgauges.jpg We have our National this weekend, see you again next Monday. John Hammink Anna Paulowna, Netherlands. jg.hammink at quicknet.nl www.oldengine.org/members/hammink/web > Kewl guys..thanks > > RickinMt.