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How cold is too cold for 20w50?

Just changed my oil to 10W40. Morning temps now around 38 and headed downward. Around April will go back to 20W50. Bike now has 178,000 miles.
 
Camped around south east WV in the mountains this past weekend and had no problem with the bike starting in the cold mornings, fired right up considering being outside throughout the weekend. Currently running with Lucas 20W50.

<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/GcUZb1oeR9yvizY773NaIw?feat=embedwebsite"><img src="http://lh6.ggpht.com/_QUlLxCsQNp0/SvmWNDBMNuI/AAAAAAAAA9k/CcYS9NzxWTg/s800/SunMorn-1.jpg" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/houstonmcintyre/SouthEastWV?feat=embedwebsite">South East WV</a></td></tr></table>

May go to 10W on next oil change for the winter which will be a moment since the motor was drained and refreshed this past Thursday. Had to use what was left in the box.
 
Since there are so many varying opinions ranging from in-spec dino oil to out of spec dino oil, to out of spec diesel oil, to in spec synthetic oil, to lightbulbs, I'll offer mine.

If stored/parked overnight outside, use 10w40. If parked in a garage with a modicum of heat overnight and not parked more than 5 or 6 hours outside at the restaurant or tikki bar, then 20w50 is fine.

When we lived in Kansas I rode some every month and used 20w50 year-round. But the garage was attached to the house and got some warming even though not heated. If it was way cold out and I went for a ride I didn't park for more than the hour or two it took to eat if we stopped at a restaurant.

One year on December 8, Voni's birthday and snowing, she insisted she wanted to ride a bike. I had to bring her F650 into the dining room to warm it up, and then needed to blow warm air on the carbs to make it start. But since it was about 8 degrees and the bike was in the totally unheated shop building I considered this a little victory.

p.s. It was cold enough out there she didn't ride it very far, or very long, but she did ride it.

In the dining room? I caught hell from my wife for bringing one in the basement! But then again, my wife isn't shooting for that million mile patch.
 
Just changed my oil to 10W40. Morning temps now around 38 and headed downward. Around April will go back to 20W50. Bike now has 178,000 miles.
Ditto on the 10W40. I was thinking of going to synthetic but stayed with Dino.
 
oh, btw

tucked the bike away for the winter. just don't have time, inclination etc to put up with the expense of garaging it in nyc this winter. i got it home and had 3L of 20W50 so i dumped the old stuff and put that in. if it gets started this winter it'll probably be very, very infrequently and only for a nice long ride.
 
i got it home and had 3L of 20W50 so i dumped the old stuff and put that in. if it gets started this winter it'll probably be very, very infrequently and only for a nice long ride.

bz -

3L is too much for the bike...unless you have a deep oil pan. There needs to be an air volume above the oil in the crankcase and the extra liter robs that. You could get overpressurization of the seals and create some leaks. I'd say don't start it or try to get that extra liter out either by a quick drain or use some kind of turkey baster suction device out the fill hole.
 
bz -

3L is too much for the bike...unless you have a deep oil pan. There needs to be an air volume above the oil in the crankcase and the extra liter robs that. You could get overpressurization of the seals and create some leaks. I'd say don't start it or try to get that extra liter out either by a quick drain or use some kind of turkey baster suction device out the fill hole.



i had 3L, i didn't say i put it all in the bike :)
 
If stored/parked overnight outside, use 10w40. If parked in a garage with a modicum of heat overnight and not parked more than 5 or 6 hours outside at the restaurant or tikki bar, then 20w50 is fine.

When we lived in Kansas I rode some every month and used 20w50 year-round. But the garage was attached to the house and got some warming even though not heated. If it was way cold out and I went for a ride I didn't park for more than the hour or two it took to eat if we stopped at a restaurant.

This pretty much matches my experience in the Boston area, where I ride my 84 through the winter (it actually sees relatively little use outside of winter, but we are a multibike family) and use 20W-50 (full syn) year round. . I too store it in an unheated garage, temp in there dip but don't go below freezing I would think.

Once I'm underway, I don't make many stops. Ride, come back, thaw out. Maybe try to wipe major salt clumps off the bike. Corrosion is a major problem, given the salt we love to dump on the road around here.
 
It must be, because there are 4 pages in this thread to answer a simple question. :D

you should change your viewing options, i've only got about 1.5 pages:)

and were this 20/50 synth, i wouldnt be having this talk, but till i finish replacing the last of the seals, im sticking with dino (since they're leaking already). as it is, since i've decided to give my riding a rest for a few months, it's not a big deal.
 
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