flat corbin modded to semi-dished

[Tom Collins]

Dose anybody here use Castrol GTX 20/50 wt. I ride some in the so. California desert and need to find a good 20/50 wt oil to run in the summer time. I live in Big Bear City at 7000 feet so I would switch back to a 10/40 wt for winter. I see that Rotella has a 15w/40 but no 20/50. Is this good enough for temps well into the 100's.

[W.V. Doran]

I use it (6yrs), live in AZ, seems to work like all the other oils. Change it often, 1500/2000 miles, no problems. Tom Collins wrote: Dose anybody here use Castrol GTX 20/50 wt. I ride some in the so. California desert and need to find a good 20/50 wt oil to run in the summer time. I live in Big Bear City at 7000 feet so I would switch back to a 10/40 wt for winter. I see that Rotella has a 15w/40 but no 20/50. Is this good enough for temps well into the 100's. WVDoran Scottsdale, AZ --------------------------------- Got a little couch potato? Check out fun summer activities for kids. [Non-text portions of this message have been removed]

[Blake Sobiloff]

On 5/15/07, Tom Collins wrote:

> Dose anybody here use Castrol GTX 20/50 wt. I ride some in the so. > California desert and need to find a good 20/50 wt oil to run in the > summer time.

Ironically, you probably want a thinner oil if the engine's running hot, as thicker oils don't transport as much heat away as thinner oils do. But that's crazy talk to most, and we don't have an oil temp gauge to validate against. -- Blake Sobiloff http://sobiloff.typepad.com/> http://sobiloff.typepad.com/klr_adventure/> San Jose, CA (USA)

[Harry Seifert]

Yes, I've used Castrol GTX in most of my bikes over the past 40 years...........the only ones that didn't use GTX were the few two stroke Yamahas and Kawasakis that burned Castrol R oil in the premix. I've got an '85 Landcruiser FJ60 that's had nothing but Castrol 20W/50 for the past 250,000 miles, and I'm using Castrol 5W/30 in my new FJ Cruiser. Be sure to change the oil at 3,000 mi. intervals. Filter, too! BTW, my son uses the 20W/50 GTX in his two KTM's as well. Buddy bseifert71@...

> [Original Message] > From: W.V. Doran > To: Tom Collins ; DSN_KLR650@yahoogroups.com> > Date: 5/16/2007 8:00:54 AM > Subject: Re: [DSN_KLR650] Oil for extreme temps? > > I use it (6yrs), live in AZ, seems to work like all the other oils.

Change it often, 1500/2000 miles,

> no problems. > > Tom Collins wrote: > Dose anybody here use Castrol GTX 20/50 wt. I ride some in the

so.

> California desert and need to find a good 20/50 wt oil to run in the > summer time. I live in Big Bear City at 7000 feet so I would switch > back to a 10/40 wt for winter. I see that Rotella has a 15w/40 but no > 20/50. Is this good enough for temps well into the 100's. > > > > > > > WVDoran > Scottsdale, AZ > > --------------------------------- > Got a little couch potato? > Check out fun summer activities for kids. > > [Non-text portions of this message have been removed] > > > > List sponsored by Dual Sport News at: www.dualsportnews.com > List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html > Member Map at: http://www.frappr.com/dsnklr650 > Yahoo! Groups Links > > >

[kestrelfal]

Blake, I'm starting to get concerned. Have they been burning that stuff in SJ again. Inquiring minds want to know. Fred

--- In DSN_KLR650@yahoogroups.com, "Blake Sobiloff" wrote: > > On 5/15/07, Tom Collins wrote: > > Dose anybody here use Castrol GTX 20/50 wt. I ride some in the so. > > California desert and need to find a good 20/50 wt oil to run in the > > summer time. > > Ironically, you probably want a thinner oil if the engine's running > hot, as thicker oils don't transport as much heat away as thinner oils > do. But that's crazy talk to most, and we don't have an oil temp > gauge to validate against. > -- > Blake Sobiloff > http://sobiloff.typepad.com/> > http://sobiloff.typepad.com/klr_adventure/> > San Jose, CA (USA) >

[kestrelfal]

http://www.penrite.com.au/files/FYH2HKJF20/END-PIS.pdf "'Nuff said." LOL Fred --- In DSN_KLR650@yahoogroups.com, "Tom Collins" wrote:

> > Dose anybody here use Castrol GTX 20/50 wt. I ride some in the so. > California desert and need to find a good 20/50 wt oil to run in the > summer time. I live in Big Bear City at 7000 feet so I would switch > back to a 10/40 wt for winter. I see that Rotella has a 15w/40 but no > 20/50. Is this good enough for temps well into the 100's. >

[gmay131313]

But it doesn'T say if you pump or shovel it into the motor Greg --- In DSN_KLR650@yahoogroups.com, "kestrelfal" wrote:

> > > > http://www.penrite.com.au/files/FYH2HKJF20/END-PIS.pdf > > > "'Nuff said." LOL > > > Fred > > > --- In DSN_KLR650@yahoogroups.com, "Tom Collins" > wrote: > > > > Dose anybody here use Castrol GTX 20/50 wt. I ride some in the so. > > California desert and need to find a good 20/50 wt oil to run in

the

> > summer time. I live in Big Bear City at 7000 feet so I would

switch

> > back to a 10/40 wt for winter. I see that Rotella has a 15w/40

but no

> > 20/50. Is this good enough for temps well into the 100's. > > >

[Bill Watson]

You might want to determine how "extreme" the oil temps are in the first place. Most people don't get too fired up about oil temps until they exceed 250F, some people wait till 300F to get a plan together. I live in Phoenix AZ and have run a number of oil temp tests in the KLR. I'm more concerned with how low the oil temps are in normal riding and how long it takes to get up to temp. But oil temp is very load dependent, so high speed riding with lots of wind resistance on a hot day would be your worst case. I have "stock" wind resistance but did run a test one day when it was 110F, and rode at 75 mph indicated until oil temps stabilized - at just under 240F. For me that's an extreme case; it's much more common for me to see temps in the 180-210 range, and that's after 25 miles of riding before it stabilizes. So the point is you need to assess your riding condition. In my case, I don't consider these results to mean that my oil is at "extreme temps". But if you had a passenger, tall windshield, and panniers on a summer ride and drive fast, I'll bet you could get into an "extreme" temp range where that question is a valid one. Bill Watson Phoenix, AZ --------------------------------- Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center. [Non-text portions of this message have been removed]

[kestrelfal]

So what's more important (worse?), for the KLR650, "steady-state" bulk oil temperature or "transient" coolant temperature? Fred,,,,,who doesn't mind being ignored

--- In DSN_KLR650@yahoogroups.com, Bill Watson wrote: > > You might want to determine how "extreme" the oil temps are in the first place. Most people don't get too fired up about oil temps until they exceed 250F, some people wait till 300F to get a plan together. > > I live in Phoenix AZ and have run a number of oil temp tests in the KLR. I'm more concerned with how low the oil temps are in normal riding and how long it takes to get up to temp. But oil temp is very load dependent, so high speed riding with lots of wind resistance on a hot day would be your worst case. I have "stock" wind resistance but did run a test one day when it was 110F, and rode at 75 mph indicated until oil temps stabilized - at just under 240F. For me that's an extreme case; it's much more common for me to see temps in the 180-210 range, and that's after 25 miles of riding before it stabilizes. > > So the point is you need to assess your riding condition. In my case, I don't consider these results to mean that my oil is at "extreme temps". But if you had a passenger, tall windshield, and panniers on a summer ride and drive fast, I'll bet you could get into an "extreme" temp range where that question is a valid one. > > Bill Watson > Phoenix, AZ > > > --------------------------------- > Park yourself in front of a world of choices in alternative vehicles. > Visit the Yahoo! Auto Green Center. > > [Non-text portions of this message have been removed] >

[Blake Sobiloff]

On May 18, 2007, at 5:31 PM, kestrelfal wrote:

> So what's more important (worse?), for > the KLR650, "steady-state" bulk oil > temperature or "transient" coolant temperature?

I'd say the fluctuating coolant temps are more likely to cause problems WRT longevity. It's pretty easy to use a thinner oil if the oil temps aren't regularly hitting 100 dC, so you can still get to the desired 40/50-weight viscosity. However, until Bill can bless us with his improved thermostat, there's not much we can do to stabilize the coolant temps. -- Blake Sobiloff http://sobiloff.typepad.com/blakeblog/> http://sobiloff.typepad.com/klr_adventure/> San Jose, CA (USA) [Non-text portions of this message have been removed]