Yesterday it was 103*. When i made a stop, I noticed that my oil pressure dropped to about 5# of pressure. When I took off, it went back to 28-32#. Is this normal, once the oil gets hot?

 

That's been my experience with multiple HD's with oil pressure gauges; make a stop for fuel with the engine fully heat soaked on a nice hot day and when you restart the pressure is going to read rather low. Start to bring RPM's up and the pressure is fine and as you begin riding and the engine cools the pressure is back at its usual reading; on this Wide Glide 103" that's 40 PSI with SAE 50 VR1 engine oil... you're good to go

No air flow at a stop and a heat soaked engine? That oil get's hot and it does affect your oil pressure readings when you first start the bike again...

 

Harleys run on volume, not pressure, so as long as the lights don't come on, you're good to go.

 

Exactly; I certainly don't want to turn this in to an oil filter debate but one of the reasons I prefer permanent oil filters is the increased oil flow rates they offer. HD's run on their volume and I'll take all the added oil flow I can

 

Yes. My favourite indy hates oil pressure gauges and you can see why - they cause too may queries and 'problems'. Ride on and enjoy.

 

Same reason most new vehicles gauges dont show real numbers any more.... just a Low to high scale with the little red danger zone.

 

When you ask a technical question, consider adding the model and year...

 

My 09 Street glide does same. After it's hot the oil pressure gauge drops when idle down at red light. Oil pressure light doesn't come on.

 

Hello to all Fellas' I have a 96" Twin Cam engine built in 2007. It has S&S cases, Andrews cams, everything else is HD. I must say that I'm not familiar with the Twin Cam engine. All of them that I look at have the oil pressure gauge in front of the engine, mine is towards the back where the feed, return and vent lines are, just like the Evo.
The pressure gauge reads zero, its been replaced with a new gauge and it reads zero as well.The oil flows free and speeds up when I twist the throttle. There's no noise at the top end and the bike been running like this for 10+ years (I bet the bike doesn't have 5000 miles on it)
I'm lost on this one. If somebody has and idea or maybe another website, please let me know.
Thank you
fish