Two things. First check to see if the oil pressure sending unit is functioning properly. I have had them leak and the oil messes them up. You might find the correct unit at a place like NAPA. The second number on your oil weight is the important one. It is the viscosity at operating temperature. The first number is cold viscosity. Lower on the first number is best for cold climates. You could have an oil pump that is getting tired. That will be way more expensive. I hope this helps Jim Jim Calandro il Capo US DESMO www.usdesmo.com 704-843-0429 On Tue, Jul 29, 2025 at 5:22 PM STEPHAN BOATIN via Ducati < ducati@list.ducati.net> wrote: > > > > ---------- Forwarded message ---------- > From: STEPHAN BOATIN <vidking580@aol.com> > To: ducati@list.ducati.net > Cc: > Bcc: > Date: Tue, 29 Jul 2025 17:21:58 -0400 > Subject: [Ducati] 916 engine low oil pressure light blinking at low revs > > My beloved ST4 doesn’t like hot weather. On a long hot ride the oil > pressure light blinks when the engine slows to an idle. My question is > this, would using a heavier weight oil like 20w50 improve the situation > increasing oil pressure or would it do opposite lowering the oil pressure? > I presently use motorcycle specific 10w40. > > > ---------- Forwarded message ---------- > From: STEPHAN BOATIN via Ducati <ducati@list.ducati.net> > To: ducati@list.ducati.net > Cc: STEPHAN BOATIN <vidking580@aol.com> > Bcc: > Date: Tue, 29 Jul 2025 17:21:58 -0400 > Subject: [Ducati] 916 engine low oil pressure light blinking at low revs > > > > > To get the links and updates on all today's Ducati news: > http://www.ductalk.com/ > and > https://www.facebook.com/ducnet > _____________________ > Ducati mailing list -- ducati@list.ducati.net > To unsubscribe send an email to ducati-leave@list.ducati.net > Mailto: %(user_address)s