Service intervals

[clemsonfor]

I was looking through my yanmar factory YM240 servie manual. There is some things like California has mentioned like removing the pan and cleaing it.

But the thing that got me is that it recomends changing oil every 50 hours but filter every 100 hours. IE. oil change at 50 hrs, oil/filter change at 100 hours, oil change at 150, oil/filter change at 200. Does anyone do this, im not considering it filters are cheap and even if my filter is not even half clogged (no way of knowing) why risk it there realitively cheap, vs new bearings etc.

I will have to go through it to see what else is on there that is strange.

 

[California]

I think it was the YM186D Service Manual - anyhow some official Yanmar publication - where I saw a recommendation to change the oil filter every two or three oil changes depending on operating conditions. Strange! I think their reasoning is that some work such as plowing snow or rice tilling has no dust so the filter can't load up. But if I ever switched to intermittent filter changes I would unscrew and drain the filter canister at each oil change.

Also I've read that an oil filter works better, catches finer debris, after it has been in use for a while and the finest pores have loaded up. I'm not saying I agree, but that might be what the engineers had in mind when they recommend intermittent filter changes.

A filter that has reached saturation forcing open the bypass isn't a disaster. Lots of classic tractors and cars had no oil filter at all. For the 1955 Chevrolet V8, the first SBC, an oil filter was an extra-price option. The engine block didn't have the now-universal mounting point for a screw-on filter.

More random thoughts - eliminating the sulfur out of diesel fuel reduced the corosiveness of used motor oil, which might allow longer change intervals for a tractor used intermittently and in minimal dust. It's still important to get it hot and burn off condensation, however.

 

[Gary Sweat]

Everyone has varying opinions on oil and filter changes. Personally, I change the filter at every oil change.

I have a dodge truck that I tore the engine down at 124,000 miles. The oil and filter was changed every 3,000 miles. I took it to the machine shop and had them check the cylinders, crankshaft, camshafts etc for wear. Only one cylinder was out of taper by 1/2 of 1 thousands. Everything else checked in at factory specs. The bearings were clean with no wear. I put the original bearings back in and a new set of rings, ran the engine for another 110,000 miles before taking it apart again. This time I put in new bearings and rings and am still driving the truck almost daily.

To me this pretty much proves that clean oil and filters are the life of an engine. Why take that chance for a few dollars more at each oil change.

 

[normde2001]

I change my oil and filter when the oil begins to turn black, regardless of hours.

 

[clemsonfor]

Isnt that instantly?

 

[clemsonfor]

Filter wont filter out soot, which is what makes it black

 

[Pete Judd]

One Tip, I always write the hours and date on the oil filter with a sharpe whenever it is changed. Makes it easy to rember when the oil and filter was changed.

 

[Neat 1500]

i change both oil and filter once a year.thats probably a bit to long but it only racks up about 50 hours of use in that time.once i am living out where the tractor is it will get some extra hours of use up

 

[normde2001]

Isnt that instantly?

Nope, takes about 75 hours in my engine or more, never really noticed. Soot is carbon from unburned fuel in a poorly running engine. That's what causes the dreaded "diesel slobber" when it gets bad. carbon is dust. I don't like dust in my engine. I would try cleaning out the carbon with some carbon cleaners on the market, or ATF, and see if it returns.

 

[careyo63]

Just checked my notes still CRS. so I write it down also. Had it out Yesterday a little over 20 hrs. when I changed the oil and Filter my Oil is just Barely starting to show some Carbon. Funny, looking back further 250hrs.and the last was 325hrs. on my last Oil/Filter change.

Carey