K161 oil change, help?

[LAWN BOY]

Hi all. I have a simple question and I only have to ask because I couldn’t find it on the internet and I’m new to Kohler K series engines or at least I have changed the oil on mine in the 9 months I’ve owned it. Anyways, I was wondering how to drain the oil. Is it the cube shaped plug on the bottom of the engine that has to be accessed from under the tractor?
There are no oil filters for the tranny or engine on the IH CC model 70, correct?

[West Valley G]

Yep your description sounds right for the oil plug. No time like the
present to change the oil. I always keep in mind that the only filter
system on these machines is the lubricants and the only way to keep
them clean is us changing fluids.

Ken

[LAWN BOY]

Thank you for the information West Valley G!

[LAWN BOY]

Straight 30 motor oil seems hard to come by, especially in 1 quart bottles. It’s online, but most stores don’t carry it. I ended up using Carquest brand SAE 30. What brand oil do you guys use in your Kohler K series engines?

[R Bedell]

Locally, I find SAE30 at the Auto Parts Stores, Tractor Supply stores, Farm Implement Dealers, and Walmart.

[LAWN BOY]

I checked O’reilly, they didn’t have any in 1 quart bottles. All that Wal-Mart had in smaller bottles was Briggs and Stratton brand. I’m talking about brands like Pennzoil, Quaker State, and Royal Purple, NOT Mobil 1 or anything like that.

[ol'George]

You are looking for 30W non detergent, try tractor supply or family farm & home stores.
Around my area, they have that oil.
FWIW:
The thinking is that engines without oil filtration use non detergent, as contamination is in the pan and is drained off at oil changes.
Engines with oil filters use detergent oil as the contaminates that are suspended in the oil due to the detergent action, are caught in the filter.

[greg r]

Straight 30 wt is usually a store/distributor brand now. I get mine at Napa. It's made for Napa by Ashland out of Ohio the same supplier for Valvoline. Considering it's only 50 hours between changes, any good detergent 30 wt will be fine and Napa you can't go wrong.

The thinking is that engines without oil filtration use non detergent, as contamination is in the pan and is drained off at oil changes.
Engines with oil filters use detergent oil as the contaminates that are suspended in the oil due to the detergent action, are caught in the filter.

No, that's not how detergents work. It's not just suspension of contaminants, but not letting them stick as well as neutralizing or minimizing any acids or corrosive activity.

The Kohler service manual explicitly states in the lubrication section that detergent oils are to be used.

[Farmall450]

Originally Posted by LAWN BOY

Straight 30 motor oil seems hard to come by, especially in 1 quart bottles. It’s online, but most stores don’t carry it. I ended up using Carquest brand SAE 30. What brand oil do you guys use in your Kohler K series engines?

You're in WI, there should be a Farm & Fleet somewhere.

[RoseHillFarmIHCC125]

I use Rotella 15W-40 in all my stuff. Never had a problem and I change it once a year. I used it when I overhauled my K301 last year, ran it for a few hours then changed it. Oil technology has came a long way since ‘68 when my 125 was made.