Does having a thicker oil like 20w-50 take longer to heat bike up on cold start?
08-12-2015, 08:49 PM
#1
Junior Member
Squid
Thread Starter
Join Date: Mar 2015
Posts: 22
Does having a thicker oil like 20w-50 take longer to heat bike up on cold start?
Just curious to know if you have two shawks, 1 with 10w-40 and the other with 20w-50, and its a cold start on a normal afternoon, would the 10w-40 shawk heat up quicker because the oil is thinner???
The reason i ask is because my 2005 superhawk is taking forever to heat up on cold start. I havent changed the oil yet since i purchased from new owner but im assuming its 20w-50 because in my 98 hawk it would heat up in like 1 minute and was ready to ride; i used 10w-40 in that one and never had a problem. Thanxs
The reason i ask is because my 2005 superhawk is taking forever to heat up on cold start. I havent changed the oil yet since i purchased from new owner but im assuming its 20w-50 because in my 98 hawk it would heat up in like 1 minute and was ready to ride; i used 10w-40 in that one and never had a problem. Thanxs
08-13-2015, 05:49 AM
#2
Senior Member
SuperSport
Join Date: Nov 2007
Location: Hamilton, Ontario, Canada
Posts: 807
The grade of oil in a motor has little to do with the amount of heat absorbed by coolant, metal and oil as an engine warms up. If your 2005 takes longer to warm up than your 1998, it's likely a carburetion issue.
08-13-2015, 10:09 AM
#4
Rex Kramer-Thrill Seeker
SuperBike
Join Date: Jan 2011
Location: Brookfield, WI
Posts: 2,312
I'm with James. Check your thermostat. It might be stuck open. Not to hard to get to. Lift the tank, take off the airbox and its on the bikes left side in the V of the engine. Remove the two 8mm bolts and the top will come off. It has a reusable o-ring, so you don't have to buy a new gasket. The thermostat is inside.
08-13-2015, 11:42 AM
#5
Senior Member
SuperSport
Join Date: Nov 2007
Location: Hamilton, Ontario, Canada
Posts: 807
Gabe's 2005 has a digital thermometer. If the thermostat is operating properly and the bike is stationary, the thermometer should show the coolant warming gradually until the temperature reaches about 75 degrees Celsius and then the temperature should drop a few degrees temporarily as the main thermostat opens and unheated coolant begins to flow through the thermostat. The radiators should remain at ambient temperature until the thermostat opens. See www.vtr1000.org ? View topic - Slight overheating issue
08-13-2015, 05:14 PM
#6
Well take off, eh.
SuperBike
Join Date: Jun 2012
Location: QC, Canada
Posts: 1,201
What is normal riding temps for you ? If you mean waiting for the temp gauge to read 75*c then yes, it does take some time. This is normal.
However, you do not need to wait such a long time before riding(yes, I know you know this) but just saying. Also, for your peace of mind, if you follow Comedo's advice, you will see it does take some time before warming up leaving it on idle to see if thermostat works well.
However, you do not need to wait such a long time before riding(yes, I know you know this) but just saying. Also, for your peace of mind, if you follow Comedo's advice, you will see it does take some time before warming up leaving it on idle to see if thermostat works well.
08-13-2015, 09:22 PM
#7
Senior Member
MotoGP
Join Date: Jul 2007
Location: NYC
Posts: 5,033
When you say warm up I am assuming you mean rideable. So if the carb jetting is different, or carbs are cleaner or dirtier, that is more what you are talking about.
A better carb set up tends to yield rideability sooner, but has little or nothing to do with oil viscosity within reason.
A better carb set up tends to yield rideability sooner, but has little or nothing to do with oil viscosity within reason.
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