Yesterday's Tractor Co. Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Garden Tractors Discussion Forum

Re: Kohler oil question

[Show Entire Topic]  

Welcome Guest, Log in or Register
Author  [Modern View]

07-14-2014 19:19:36

Report to Moderator

One other test that may uncover the problem is the crankcase vacum test. It involves using either a manometer or a vacum gauge (H20) to check the amount of crankcase vacum the engine can produce. That and a leakdown should tell the story.

I am thinking 8" vacum is minimum for a M16, but I don"t have my manual handy. You can find out for sure on

One other thing that Kohler is telling us about the oil used in their newer engines. They like small engine oil because it still has zinc in it. Both Kohler and Kawasaki say their brand oil still has zinc in it.

[Log in to Reply]   [No Email]
Tom Arnold

07-15-2014 05:50:45

Report to Moderator
 Re: Kohler oil question in reply to t.r.k., 07-14-2014 19:19:36  
Shell Rotella T1 straight grade oils still contain all the zinc that they had before the change in specification.

Shell's Triple Protection multigrade Rotella line also has plenty of zinc in it; far more than most oils formulated for gasoline engines but using a multi-grade oil in temps above freezing is not recommended by Kohler.

Now if you want to spend more money because it makes you feel good to do so, then you can run the Amsoil product that is labelled as being suitable for running in small air cooled engines or choose oils labelled by Kawasaki or Kohler and pay a premium price also.

The Kohler K and M Series engines are both splash-lubed and have no oil filtration. Therefore, it is essential to drop the oil every 25 hours of operation MAX to get rid of the contamination. If you are really concerned about extending the life of your K or M Series engine, then change the oil every 15 hours.

What matters most to these engines is CLEAN OIL, not fancy, shmancy expensive oils that promise long oil life. Whether you spend 3 bucks a quart or 30 bucks a quart, ALL oil will become contaminated at the same rate and without an oil filter, changing the oil frequently is the only protection against rapid wear.

[Log in to Reply]  [No Email]
D beatty

07-16-2014 13:53:35

Report to Moderator
 Re: Kohler oil question in reply to Tom Arnold, 07-15-2014 05:50:45  

I can't see any problem in using a good multigrade oil.I have been using Shell Rotella T 15-40 for over 35 years and and no problems. Run it in B&S and Kohler air cooled engines and change oil by hour meter hours.My oldest garden tractor is 27 years old and is coming up on 2000 hours and never been wrenched and run on Rotella T 15-40 from day one.

[Log in to Reply]  [No Email]
Tom Arnold

07-16-2014 23:03:40

Report to Moderator
 Re: Kohler oil question in reply to D beatty, 07-16-2014 13:53:35  
There is nothing detrimental about using the Rotella 15W40 because it will behave like a 40 weight oil when the engine is at operating temperature. Rotella or DELO are the two best choices because both are designed for use in diesel engines.

The Kohler K/M Series engines along with several other L-head cast iron engines from the 50's, 60's, 70's and 80's were DESIGNED to burn small quantities of oil during normal operation. The key issue here is that of OIL LEVEL because it is critical to keeping the crank throw and main bearings heavily lubricated at all times.

Therefore, if you want to use a multi-grade oil, then you must keep a much closer eye on the dipstick level and keep the crankcase topped up at all times. If you forget to do so, then it only takes a few minutes while mowing a ditch or hill on the cross-slope to cause an oil starvation situation and the loud bang you hear will be the con-rod snapping in two.

Kohler themselves WARN owners about increased oil consumption when using multi-grade oils when the ambient temps are warmer than 32F. Very few owners have hour meters installed on their tractors and they end up guessing when it is time to change the oil. With no oil filter, it is essential to the life of the engine to change the oil every 25 hours MAX or sooner if the conditions are more severe than normal.

Oil is cheap compared to the cost of rebuilding at changing it takes a lot less time than rebuilding does.

[Log in to Reply]  [No Email]
D beatty

07-17-2014 07:33:45

Report to Moderator
 Re: Kohler oil question in reply to Tom Arnold, 07-16-2014 23:03:40  
Tom I am not trying to dispute what your saying. But I have two of my Craftsman Garden tractors that are powered with Kohler ( 22 hp with 500 hours and a 25 hp with around 800 hours)and these engines never use a drop between oil changes. The Garden tractor in picture is Briggs & Stratton powered with the two cylinder opposed which was known not to be a high hour engine but this one is getting close to the 2000 hour mark. All my garden do run on Shell Rotella T 15-40. I don't use my tractors in winter so in the fall I clean,repair and pickel them for the winter.

[Log in to Reply]  [No Email]
Tom Arnold

07-17-2014 15:31:53

Report to Moderator
 Re: Kohler oil question in reply to D beatty, 07-17-2014 07:33:45  
Your Craftsman is powered by V-twin Kohler with OHV and a pressurized, fully filtered lubrication system. You cannot compare one of those engines to the L-head Kohler K and M Series engines on the issue of oil consumption. The modern OHV twins have much tighter tolerances in their design and manufacture.

Therefore, I do not dispute what you report about that engine. But this is an apple to oranges situation and unfortunately, so many of these discussions end up that way. One person cites their personal experience with their OPE but they do not take into consideration the technology differences.

Fords, Chevs and Dodges built in the 50's and 60's came with engines that routinely burnt about 1 quart of oil every 1000 miles or so. As someone who worked in Service Stations back then, it was routine for me to pop the hood and check the oil on every car that pulled up to the pumps for gas.. Those days are gone. Better metallurgy, better design, tighter tolerances etc all provide engines today that don't consume a pint of oil in 5000 miles or more

I cannot comment on your Briggs engine because I am not familiar with them.

[Log in to Reply]  [No Email]
[Show Entire Topic]     [Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

Home  |  Forums

Copyright © 1997-2018 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters