Re: first oil change

Posted by ScottyHOMEy on October 07, 2008 at 03:36:50 from (70.105.228.59):

In Reply to: first oil change posted by 7lazy77 on October 06, 2008 at 20:40:34:

That 1/8" isn't a lot as sludge goes, especially if you look at the shape of your pan. In the absence of any other reason to open the motor up, I'm with Tom, thinking that regular oil and filter changes will probably clean it up over time.

You'll want to use a good detergent oil. What the detergent means is not that it actively dissolves sludge but that it has additives that suspend the stuff that makes sludge as it forms so that it can be drained with the oil. If you run the tractor as Tom described, letting it warm up and run warm for a while, it will go a long way to cleaning up any soft sludge over time. Hard caked sludge, if there's enough of it to make a problem, would ultimately mean dropping the pan but, as I said, it doesn't sound as if you have all that much.

I've read some of the same threads you found that mention a problem with Pennzoil. I have no experience with it myself. I usually use Valvoline or Havoline and haven't had the problem with either of them that others report with Pennzoil.

I also don't know anything about the rislone additive Tom spoke of. I've used Seafoam as both a fuel and an oil additive to help out with sticky rings and otherwise clean things up a little, with good results. The only caution with any additive is to choose it carefully and use it sparingly. An "overdose" can produce the same problem as Pennzoil supposedly does if you've got a lot of sludge.

Last point, about warming up the motor. Easier said than done unless you have radiator shutters or have some serious work for the tractor to do. Most As and Bs didn't have a temp gauge, but just driving them around with no other load on them, they really don't warm up well. Look around the archives and you'll find all kinds of threads about these little 113s and 123s, even those with temp gauges, not seeming to warm up and the gauges never moving off the bottom peg. That has to do with a) the fact that they don't make as much heat by not being all souped up like modern engines and b) the fan being very efficient, especially on a thermosiphon system which doesn't have a thermostat in it. Sometimes it can't be helped, but as a rule I don't like short cold runs and will try to warm the tractor up any time I run it. My Super C has shutters, so I can use them to help warm things up faster. On the BN (no shutters) I've found that something as simple as letting the draft of the fan hold a kitchen trash bag up against the grill is pretty effective when you need to warm it up. Used that trick to warm the BN up while I raced around adjusting the governor and carb on the first run after a rebuild before I retorqued the head. You wouldn't want to run all day like that unless it were bitterly cold out, but leaving the bag in place until the head is a little too warm to hold your hand to for long and you can feel that the side of the crankcase is good and warm, is one way to warm it up without running it for hours or if you don't have any chores to do that would load the tractor up some.

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