slan
Silver Member
I changed the oil 3 years ago
:ashamed::ashamed::ashamed:
:ashamed::ashamed::ashamed:
B1750HSD steam from valve cover
- Thread starter aquetrac
- Start date
- Views: 5523
slan,
Here is whats happening. Every time the barometric pressure goes up and down, the crankcase breathes in and out. Every inhale brings in moisture. Just like outside, when the temperature falls at night, dew forms on the inside of the engine. Some of the water runs down the inside of the block and ends up in the oil. It starts out going to the bottom of the sump because the oil floats on the water. When you start the engine, the water is churned into the oil and distributed all through the engine. The crank, the cam, the cylinder block are all ferrous metal, which means they will rust. Rust on the cylinder wall will etches the surface, which will damage the rings and pistons and lead to excessive blow by and increased oil consumption... Don't you think its time to change the oil?
Here is whats happening. Every time the barometric pressure goes up and down, the crankcase breathes in and out. Every inhale brings in moisture. Just like outside, when the temperature falls at night, dew forms on the inside of the engine. Some of the water runs down the inside of the block and ends up in the oil. It starts out going to the bottom of the sump because the oil floats on the water. When you start the engine, the water is churned into the oil and distributed all through the engine. The crank, the cam, the cylinder block are all ferrous metal, which means they will rust. Rust on the cylinder wall will etches the surface, which will damage the rings and pistons and lead to excessive blow by and increased oil consumption... Don't you think its time to change the oil?
OP
aquetrac
Member
- Joined
- Mar 13, 2005
- Messages
- 37
- Location
- Riverhead, NY
- Tractor
- Kubota B2150, Kubota B21, Kubota B1750, Kubota BX23
All good points IBNXE. Yes it was three years ago but only 20 hours ago that I changed the oil. But with it sitting so much I agree it is a strong possibilty that is what is going on. I bought the oil filter yesterday and will be changing the oil this weekend. I'll report back as to any improvement.
slan
Silver Member
I guess I missed the quote marks. I would never go three years in anything before changing oil because of the points you have made. Sorry Aquetrac, just surprised at the interval.
Oil is cheap compared to internal wear components.
savageactor7
Platinum Member
meh...ours have smoked since we got it back in the early 90's. Sitting in the barn all winter oil can gather moisture from condensation. We use ours all winter so it's not as bad as yours...change the oil and take it out for a good exercise and it'll be fine.
OP
aquetrac
Member
- Joined
- Mar 13, 2005
- Messages
- 37
- Location
- Riverhead, NY
- Tractor
- Kubota B2150, Kubota B21, Kubota B1750, Kubota BX23
So here is an update: I changed the oil and filter, the oil was black but so far I see no water (I saved it in a clear jar to see if it seperates). The oil cap did have a gray almost grease-like residue around it and water droplets. I ran the tractor a full RPM and drove it for thirty minutes. Still steaming and when I hold my finger over the breather tube, pressure builds up. When I release my finger, steam rushes out and so does about a teaspoon of water. I checked the radiator level and it did not appear to go down. I think I've got problems beyond condensation. Is there a pressure test of some sort to determine a blown head gasket or cracked block?
The Haymaker
Veteran Member
I'd run it a lot longer than that. You have to get the oil hot enough to boil the water out of it, but also evaporate and purge that water vapor out of the system.
I used to work in a lube shop and we could always tell the people who never used their vehicle for anything other than short commutes to work. The oil cap, valve cover innards and dip stick would be covered in "peanut butter". Just let it run.
Yeah, we may be wrong, but I still agree this is a condensation issue.
E
niemeyjt
Silver Member
As per my original reply, I still think there are most likely worn piston rings - possibly due to lack of regular use and pitting of bores. This would explain the pressure build up in breather pipe.
Exhaust gasses are mostly CO2 and water - and it could be this water that condenses inside engine if it is used for short runs that subsequently evapourates out when engine is next used and then reforms water seen by OP.
I also think that for a cracked block or blown head gasket to be cause of the water, it would be coming from coolant and you would see a drop in radiator.
J
Exhaust gasses are mostly CO2 and water - and it could be this water that condenses inside engine if it is used for short runs that subsequently evapourates out when engine is next used and then reforms water seen by OP.
I also think that for a cracked block or blown head gasket to be cause of the water, it would be coming from coolant and you would see a drop in radiator.
J