MG Midget J1 1933 Instruction Manual page 5

IMPORTANT
HE
attention of owners of new
..G.
Midget Sports cars is
drawn to t h e following.
T h e importance of carefully
running-in a new engine cannot
be over-estimated, and care and
restraint during t h e first 2,000
miles will be handsomely repaid.
Change the engine oil after the
first 500 miles, and every 1,OOr-
1,500 miles thereafter.