Why would you waste the time to change some of the fluid without flushing the sediment off the bottom??? You would not take a bath and put your dirty clothes back on.
Also, I doubt that their smallest tube will fit thru the radiator cores to suck even a little of the coolant out.
Re: Removing radiator drain plug on B2650
I have probably drained 50 or more with this drain plug and have never had a single problem removing them. I always use a 1/2" wide regular blade screwdriver and unscrew slowly as it is plastic.
Never heard of any concerns until this thread.
The biggest screwdriver I own is a 3/8” flathead. When I used it, it tore the plastic and I couldn’t loosen the bolt. It looked like it fit. Although its the next size up, the 1/2” is an uncommon size. Most people don’t have one laying around.
I read online that some recommended a JIS #3 screwdriver. I ordered a 1/2” flathead and the JIS online. The JIS doesn’t fit. It wiggled in the bolt head and tore up the bolt head more. The 1/2” fit.
The mightvac I bought (a cheaper model) didn’t do much. The only thing it helped me accomplish was to drain the reservoir tank (and make a funny sucking sound that reminded me of my ex-girlfriend) and is not the right tool for this job. You’re right. I’ll save it for my smaller engines without drain plugs.
There’s a lot of good intentions. There’s a lot of misinformation. It’s tough to sift through it all and sometimes even the best of advice can go wrong. I’m just trying to figure it out one day at a time.
Mightvac $65
One JIS screwdriver $20
One 1/2” flathead $20
One oem replacement drain bolt $20
Finding out that something actually works through trial and error, A hundred and twenty five dollars!
At least the next guy won’t go through this. We hope.
