Scott, 20/40 or 20/50 as recommended in the service book is what to use. Shops normally use 10/30 if not instructed to do different and that will effect the reading. Naturally if the sending unit is old the reading coupled with the wrong weight oil or should I say different weight oil will effect the output. John Hervey www.specialtauto.com -----Original Message----- From: Scott McMullan [mailto:mcmullas@xxxxxxxxxxxxxxxx] Sent: Thursday, July 01, 2004 3:59 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: RE: [DML] Oil Pressure Weirdness I wish I could give you real answers to these questions, but... I haven't changed the sending unit and the P.O. didn't mention it in the list of work he had done to the car (I've had it for almost a year), and I left the choice of oil weight up to the shop where I had it changed. I can hear a chorus of *gasp*'s from the readers out there (I didn't change my own oil... what a scandal), but the fact is I was having the state inspection done, the oil change was overdue, and my life has been so busy lately that I often need to make choices that free up my time. -----Original Message----- From: John Hervey [mailto:john@xxxxxxxxxxxxxxxx] Sent: Wednesday, June 30, 2004 10:59 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: RE: [DML] Oil Pressure Weirdness Scott, What weight oil are you running and how old id the sending unit. John Hervey To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/