Thanks, Randy and John
Great stuff from Restoration Supply Company. In the latest issue of Antique Automobile, I put in a four-page story about what that family went through when the fires went through their place two years ago.

"250W gear oil. A heaver, tacky cohesive oil for transmissions and rear axles where heavier oil is required. It can also be used with spiral/bevel or older hypoid gears. LubriPlate SPO-288"

My search abilities failed to bring up the answer I'm looking for, but perhaps I just didn't type in the correct word sequence, I don't know...
If this question is redundant, I apologize.
I've also posted my question on the AACA Forum, so again, if anyone finds that offensive/redundant/obnoxious, I'm sorry.

A service procedure recommended by Packard in 1940 suggested putting in 250 weight oil in my transmission/overdrive as a first step to try and eliminate some rattling noises that appear at a certain speed.

When I serviced the car after 40 years of storage, the oil I put in was about 80 weight, which I'm sure is sufficient for lubrication purposes. However, I'm hearing what I think is the rattling noise mentioned in the service letter. My thought is to find as thick of an oil as I can, put it in, and see if the sound changes tone or is eliminated. If the sound does not change, I should be able to conclude that the rattling noise is coming from something else (driveshaft, possibly being unbalanced and causing vibration elsewhere).
My question is, where do I find 250 weight oil, or something close to it?

Well... you'd be assuming that one set of the tappets aren't missing.

Just the three in the photo.

I believe he said it was delivered several months into 1939, so I believe the serial number is quite late as well. Your theory about it being cast in 1950 with its original number sounds good to me.

If you were restoring a authentic 1939 Packard Six woody that had this engine, would you look for an authentic 1939 engine, or leave it?

... and the casting date??? Any idea why it would say "50"
Thanks.

I'm trying to help a friend with a 1939 Packard Six figure out if his engine is correct or not. The casting numbers are: 6 30 50. One might think this would be 1950, but of course, Packard didn't have a Six in 1950.
The stamped number is: B22536A

On my 1940, the casting numbers tell me the date, but the casting numbers here are confusing us.

Thanks.

I initially posted this in postwar, but I think I should have posted here: Can anyone help identify this set of valve tappets and what they're for? I don't want to throw them away, so I'll give them to anyone who needs/wants them, f.o.b. Dayton. I'll also ship them, for the cost of postage.

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Tom
I refer you to Owen's last line.
Owen
That makes sense, as the box was labelled "1931 Packard parts." However, since I'm not familiar with the innards of engines, and not knowing what roller tappets look like, I assumed these weren't roller tappet sets.
Tom
Do you need 3/4's of a set of valve tappets for your car? I'd consider accepting half-retirement payment for them!

These valve tappets came in a box of prewar Packard parts I bought. Someone mentioned that they might be for a V8. Can anyone here help me identify what they might fit?

If and when they do get identified, if there's anyone that wants them I'd be happy to part with them for only shipping cost, or FREE f.o.b. Dayton.

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