I recently read through my owner's manual for my 1934 Nash Ambassador 1200 series. I noticed that with the vehicle as new the first 250 miles the new owner is told not to exceed 30 M.P.H. The next 250 miles the owner can then drive up to 40 M.P.H. For the next 500 to 1,000 miles the owner is not to drive over 50 M.P.H.
The manufacturer also recommends to lubricate the car every 1,000 miles, change the engine oil every 1,000 miles, inflate tires every week, fill the battery with distilled water every two weeks, clean the air cleaner every 3,000 miles, clean gasoline strainer on the fuel pump every 3,000 miles, change transmission and rear axle oil every 5,000 miles, check fan belt every 3,000 miles, etc. On this car the two types of lubrication: heavy oil and light oil and what appears to be over 20 areas that would need lubrication. You have to be a mechanic or dig up a long dead processional chauffeur to be bale to take this car out for a long drive.
What are the "Recommendations of other 1930s cars during running-in period?". I am curious for these "running -in period" limits on speed for makes such as Ford, Dodge, Cord, Cadillac, Chrysler, Rolls Royce, Hupmobile, Pierce Arrow, Peerless, Buick, Marmon, Studebaker, etc? Is this recommendation for the 1934 Nash 1200 series about the same for all manufacturer's makes and models?