Radiator sight glass

[bigred]

I know this has been covered be fore ,but I'll be danged if I can find it. Where does the anti freeze need to be on the sight glass?? I/2 way up.1/4 way up 3/4 way up or should the sight glass be completely  covered??? Yes I know !! Another  amateur question!!

[luvrbus]

Completely covered as long as it is in the sight glass the level is safe

[bigred]

Thanks Cliff!!

[MagnoliaBus]

For your information.

[bevans6]

I like to have the cold level right in the middle of the sight glass, so I can see the line so I don't get fooled by thinking I am looking at coolant instead of air.  It will usually go up above that when hot.

[Iceni John]

I deliberately overfilled my surge tank, drove until the coolant had expanded and come out of the overflow tube into my catch bottle, then after it had completely cooled down I marked the level on the sight gauge as the maximum cold fill level.   Easy!

John

[muldoonman]

Fill my tank up and let it overflow to where it wants to run. Has worked for 7 years so far.

[luvrbus]

All the Prevost books tells you about the sight glass is " if coolant is visible when cold it's good.All the Prevost people I know keep the glass covered