From the way your question is worded I'm guessing that the sight glass isn't normally red color. It sounds like you are saying that it looks like something has dyed the sight glass red.
If that's so....well, this is just a guess....but are all the other tractors you are looking at with the red sight glass used tractors? The reason that I ask is it used to be pretty common practice to mix ATF with the hydraulic fluid - there are even some folks who still do - especially in the winter or real cold climates. And ATF has a stong red dye.
You'll get the full range of opinions on whether mixing was a good thing to do or not. BTW, it wasn't done to save money; ATF tends to be more expensive than most hydraulic fluids.
Now that there are more reasonably priced low viscosity hydraulic fluids and even some reasonably priced synthetics I imagine the practice will die out.
rScotty
I don't know anyone that puts dye in unless they have a problem and are trying to locate a stubborn leak. Could the factory?
I used to think on the same lines but the DPF systems can royally ruin your month. All is fine and dandy and then the day you don't check your oil your crankcase and it is overflowing of carbon and fuel.... or worse, coolant. Happened to me.The funniest thing about this is the people who put the least hours on machines are the ones who worry the most about stuff like this. Little CUT's who live in the garage and get 20 hours a year of easy use while the owner changes oil every year because the manual says to.
These are the machines to look for if you can find them used. Probably have 100-200 hours and the owner finally got sent to the nursing home or dies and the tractor is in pristine condition with barely a scratch. Most implements are barely used and it's had 9 oil changes in 123 hours of use. LOL
The last paragraph is the one I go with,This is the recommended operating procedures for my Kubota M6040. Right out of my Op Manual.
And several years!!!Wow, 50 comments and all one has to do is follow what is stated in the owners manual. Sheesh.
Kind of like the other forum you and I are on.. Bringing old posts back to life for more hashing over...lolAnd several years!!!
Not exactly. Bill is a much better moderator than the ones on here. Much fairer. More old junkers on there too. Some of the threads I read, I'm amazed at the junk they buy.Same questions, same answers and opinions, just new readers.
I read once that magazine articles were mostly forgotten after six months and could then be repeated or rewritten. New people start and old people stop.Kind of like the other forum you and I are on.. Bringing old posts back to life for more hashing over...lol
No. Last 2 car engines got their regular oil changes at 10k miles. That's what was in their manuals. Do not think tractor engines should be any different. Should be able to go 400 hours like all changes.The last paragraph is the one I go with,
any new engine gets it's first oil change around 500-1000 miles 0r 10-20 hours, on rebuilt engine I change the oil after a 30 minute breakin run.
Then when it goes in service the next change is about 500-1000 miles or 10 hours or so. Then they go to normal change intervals
which for me are less then the maximum specified in any owners manual.
I also know that my vehicle milage is all considered severe by the manuals definition, dirt roads and field roads, short trips, high idling times.