No.BURP - to make sure it's full? Will do that. Thanks
Thank you for the additional information. Now I know what to do.No.
Burping is a process to remove air pockets in the cooling system plumbing, because . . . air pockets may obstruct coolant circulation.
How to burp? Remove radiator cap and start engine. Run engine until coolant temperature rises to the point thermostat opens, observable by watching circulation flow at radiator filling nozzle. Allow engine to circulate coolant while idling for several minutes, expelling trapped air through coolant filling nozzle; shut engine down, top off coolant (in radiator, and fill to "full" zone of reservoir), restore radiator cap, and ride on.
This posted, I don't doubt thousands of KLR owners have drained their coolant, re-filled, and NEVER had any problem with air pockets, and have never burped their bikes. Good for them! I appreciate the, YMMV phenomenon. Yet . . . trapped air can interfere with circulation, and . . . air displaces coolant, diminishing engine cooling capacity.
Personal experience: KLR250; coolant drained and re-filled by dealership on regular maintenance schedule, had the DICKENS of a cooling problem (even installed a redundant manual fan switch in hope of addressing the problem, without effect); all solved by burping the radiator.
Got it. I will look for that less expensive prestone. Thanks again 👍Personally, I'd use the less expensive Prestone or other brands of Light Green "all makes, all models, all years".
The coolant reservoir doesn't Need to be full, just Never allowed to be totally Empty. Saves a pound & a half of weight. What ever. I fill 'em up.
Double check the radiator level after a couple minute run time, they usually burp an air bubble.
10W40 is fine for use on your original OEM foam air filter (& in the engine), but I prefer straight grade SAE40 for a little less weepage (from the air filter). Easier to clean than the sticky stuff.
If you ever switch over to a Coarser foam filter like a Uni-Filter, you should use stickier foam filter oil like Uni or Bel-Ray.
They stay in the coarse foam better.
Thanks for the link. Very practical and informative, Damocles shared how important burping is @ #8. I experienced that many years ago when my car almost hit the red temperature mark, I filled the radiator as soon as possible (while engine is running) until it's full and I noticed it becomes empty sucking the fluid down so I kept filling it up until it doesn't get empty anymore and no bubbles.