Using aw46 in S175?

[acs]

Hi, I have an S175 that I purchased about a year ago for use around my property, the unit had been serviced 100 hours prior so I have not done any fluid changes yet. I do however need to top up the hydraulic fluid as there is a leak in my log splitter and I am not sure what fluid they used but it's likely the bobcat stuff. Unit is in the pacific nw so neutral climate.

So the question is, I have two new 5g barrels of AW46 fluid left over from a marine hydraulic system. Is there any issue with using that to top off the bobcat?

The specific fluid is Chevron Rando HD46.

Longer term could I use HyGaurd in the bobcat? I like the idea of only using one fluid type for the bobcat, tractor and miniex.

Thank you!

 

[brdgbldr]

Hi, I have an S175 that I purchased about a year ago for use around my property, the unit had been serviced 100 hours prior so I have not done any fluid changes yet. I do however need to top up the hydraulic fluid as there is a leak in my log splitter and I am not sure what fluid they used but it's likely the bobcat stuff. Unit is in the pacific nw so neutral climate.

So the question is, I have two new 5g barrels of AW46 fluid left over from a marine hydraulic system. Is there any issue with using that to top off the bobcat?

The specific fluid is Chevron Rando HD46.

Longer term could I use HyGaurd in the bobcat? I like the idea of only using one fluid type for the bobcat, tractor and miniex.

Thank you!

There shouldn't be any problem with topping off the machine with the high quality oil that you already have.

When the oil in the hydraulic system is changed, you can never get all of the old oil out so there is always some mixing of different oils. This is also the case if you use different attachments that you don't know what oil is in them such as rentals.

There is always a huge discussion about oils on here. If you do a search you will find several.

 

[acs]

Thanks, I found a bunch of info on using oil like this but not mixing. The machine gets light use so I'll just top off for now.
Appreciate it.

 

[Equipment_Tech]

Going from a 32 weight to a 46 weight doesn't sound bad...... if you don't mix, lol

In my experience I would not recommend mixing or changing the manufacturer oil with a different weight

First off, all the seals and tolerances are designed for a certain thickness of oil and changing it can cause big issues outside of leakes

Second of all...... Unless you have a double diaphragm pump to drain your entire hydraulic system, you will never get all of the othe oil out of the system properly and therefore cross contamination is created

I recently discovered that Case is now using there Hi-Trans (aw46) oil for there hydraulic system that use to be aw36

Soo your taking the transmission oil aw46 and replacing it for the aw32 hydraulic oil, its very bad for the system, I mean would you put ATF in your engine, just saying

 

[acs]

I may not fully understand, I thought aw32 versus 46 at its core is about viscosity, that's why Deere makes a 32 and a 46 hyguard and they can be swapped based on operating climate. In PacNW wouldn't I always want aw46, and since it's lower viscosity wouldn't any system designed for aw32 work with aw46 (to your point on seals)

 

[Equipment_Tech]

Yes the core is the viscosity ("thickness")

API rating should alway be the same when replacing with another brand of oil, this ensures the viscosity and or weight is the same

I completely agree with you about the different operating temperatures using different oils during different seasons but the truth in my opinion is very sad

How many equipment brands required the owner/operator to change oils during different climate conditions ?

A thicker fluid travels faster then a thinner fluid

Base off the clearances between moving parts are critical to the viscosity - thickness to fill the open cavities,
if fluid travels too fast this could result to overheating as the fluid is required to be a certain thickness to stay in that location longer as if it were thinner it would travel soo fast that it could not cool that location of surface and or moving parts

 

[Equipment_Tech]

Yes the core is the viscosity ("thickness")

API rating should alway be the same when replacing with another brand of oil, this ensures the viscosity and or weight is the same

I completely agree with you about the different operating temperatures using different oils during different seasons but the truth in my opinion is very sad

How many equipment brands required the owner/operator to change oils during different climate conditions ?

A thicker fluid travels faster then a thinner fluid

Base off the clearances between moving parts are critical to the viscosity - thickness to fill the open cavities,
if fluid travels too fast this could result to overheating as the fluid is required to be a certain thickness to stay in that location longer as if it were thinner it would travel soo fast that it could not cool that location of surface and or moving parts

Auto correct: Thicker fluid travels slower then a thinner fluid/oil

 

[acs]

Agree but if many makers like jd suggest oil based on climate then mixing shouldn't really matter and the blend may have slightly reduced or increased viscosity, so the real question is if bobcats have any specific designed parts that can't work with aw46. Given that temp has as much of a factor than viscosity I'd guess there is no way that in the pacnw I'd get temps low enough to cause flow issues in a bobcat running aw46.
That said I know absolutely nothing about this subject…

 

[Equipment_Tech]

I totally understand and agree with what your saying, I personally believe that it causes premature component failure

 

[Equipment_Tech]

Sorry, NO, aw46 is NOT lower viscosity than aw32. Just the opposite View attachment 7474

Yes I always get confused with that

 

[Equipment_Tech]

API rating has nothing to do with viscosity, only with the additive package in the oil. It is important to stick with the API rating specified by the equipment manufacturer. Viscosity can vary, depending upon the ambient temperature/climate you are operating in. Most manufacturers specify a different viscosity for different temperature ranges. You need a thicker oil (higher viscosity) in Arizona than you do at -20 in the Arctic. Viscosity requirement varies with the ambient temperature. Has nothing to do with the API rating.

Hey what do I know......

 

[Equipment_Tech]

Hey what do I know......

 

[Equipment_Tech]

API rating has nothing to do with viscosity, only with the additive package in the oil. It is important to stick with the API rating specified by the equipment manufacturer. Viscosity can vary, depending upon the ambient temperature/climate you are operating in. Most manufacturers specify a different viscosity for different temperature ranges. You need a thicker oil (higher viscosity) in Arizona than you do at -20 in the Arctic. Viscosity requirement varies with the ambient temperature. Has nothing to do with the API rating.

 

[Equipment_Tech]

Hey what do I know......