Summer oil weight VS. Winter oil weight

[liferider]

What weights do you run in your Big Twin in the hot summer and what weight oil during the winter. Or do you keep the 20/50 year round. Slow traffic in June at the ROT two years ago in 5 o'clock traffic, I had to turn 1800 rpm to make 10 pounds of oil pressure on my HD Ultra Classic. The motor had gotten hot and the Mobile 1 broke down.

 

[Nukeranger]

I use 20/50 year round including every year at ROT! I watch my oil pressure and temperature when at ROT. Once warm, it is not uncommon in the summer months to be at 5 psig oil pressure. My Oil temperature rarely goes above 215 degrees fahrenheit and I have no Oil cooler. In the winter, my oil temperature is always just less than 200 degrees fahrenheit.

 

[TomM]

I've been contemplating something other than the 20w50 for the summer. Not sure what,or if its worth it. St.Louis doesn't quite have Louisiana heat,and humidity,but its still pretty friggin miserable.

 

[scubaman15]

I'll prob get blasted for this ...but Amsoil has a 60w that I'm going to run this summer when it gets hot this summer , I run the 20w50 Amsoil most of the time but in traffic when it gets very hot I hear the valve train "top end noise" I thought I would try this to try and combat this problem . Hears a few links to the "New" weight
Amsoil 60w High-Performance Lubricant for Motorcycle Engines and Transmissions
It states its for BIG bore bikes in description
APPLICATIONS
AMSOIL Synthetic SAE 60 Motorcycle Oil is recommended for early-model air-cooled V-Twin engines where a 60-weight motor oil is specified. SAE 60 motor oils are commonly used in Harley-Davidson® Knucklehead, Panhead, Shovelhead and big-bore motorcycles. AMSOIL Synthetic SAE 60 Motorcycle Oil meets API SG, SL/CF; API GL-1; JASO MA/MA2 and ISO-L-EMA2.

 

[Th3InfamousI]

I'll prob get blasted for this ...but Amsoil has a 60w that I'm going to run this summer when it gets hot this summer , I run the 20w50 Amsoil most of the time but in traffic when it gets very hot I hear the valve train "top end noise" I thought I would try this to try and combat this problem . Hears a few links to the "New" weight
Amsoil 60w High-Performance Lubricant for Motorcycle Engines and Transmissions
It states its for BIG bore bikes in description
APPLICATIONS
AMSOIL Synthetic SAE 60 Motorcycle Oil is recommended for early-model air-cooled V-Twin engines where a 60-weight motor oil is specified. SAE 60 motor oils are commonly used in Harley-Davidson® Knucklehead, Panhead, Shovelhead and big-bore motorcycles. AMSOIL Synthetic SAE 60 Motorcycle Oil meets API SG, SL/CF; API GL-1; JASO MA/MA2 and ISO-L-EMA2.

Blasted? Why?

I have been contemplating the same thing. The Chart in the S&S Manaul States

SAE20W50 - 30-100
SAE 50 - 60-100
SAE 60 - Above 80

Come End of May unless I'm up riding at 3 AM I'd be lucky if I can find <80 degree weather to ride in


As an FYI S&S Manual recommends that if you are operating at temps above 250 Regularly install an oil cooler. On the flip side if you are <180 dont use an oil cooler - or cover it.

 

[07bigdog]

I run Lucas 50wt conventional oil in a 124" engine.

 

[Chris04Masitff]

I'll prob get blasted for this ...but Amsoil has a 60w that I'm going to run this summer when it gets hot this summer , I run the 20w50 Amsoil most of the time but in traffic when it gets very hot I hear the valve train "top end noise" I thought I would try this to try and combat this problem . Hears a few links to the "New" weight
Amsoil 60w High-Performance Lubricant for Motorcycle Engines and Transmissions
It states its for BIG bore bikes in description
APPLICATIONS
AMSOIL Synthetic SAE 60 Motorcycle Oil is recommended for early-model air-cooled V-Twin engines where a 60-weight motor oil is specified. SAE 60 motor oils are commonly used in Harley-Davidson® Knucklehead, Panhead, Shovelhead and big-bore motorcycles. AMSOIL Synthetic SAE 60 Motorcycle Oil meets API SG, SL/CF; API GL-1; JASO MA/MA2 and ISO-L-EMA2.

i use Amsoil 60 wt in summer . have for last 2 years...

 

[Trainguy]

What weights do you run in your Big Twin in the hot summer and what weight oil during the winter. Or do you keep the 20/50 year round. Slow traffic in June at the ROT two years ago in 5 o'clock traffic, I had to turn 1800 rpm to make 10 pounds of oil pressure on my HD Ultra Classic. The motor had gotten hot and the Mobile 1 broke down.

Summer weight vs. Winter weight? Well here in Michigan during those TWO WEEKS of summer.....................:roll::roll::roll:Sorry couldn't help myself.

 

[Mickeetwo]

I run Rev-Tech 20-50 all the time, but during the summer months I add Lucus oil treatment.

 

[minermark]

Just in time for the heat, just heard it's going to be 80s+ here in norcal for the next 6 day's.
Amsoil 20/50 will be in today, not going to run this redline stuff anymore.