Triumph MAYFLOWER 1951, Instruction Book

Page: 21 / 86

20
GENERAL UPKEEP— Engine Lubrication
breakdowns. The lubricants which we recommend are obtainable everywhere and
have maintained a uniform high standard of quality over many years. They can be
trusted to withstand all demands made upon them and possess a margin of safety
which is completely adequate.
Obtaining the correct Grade
In ordering your oil be careful to state the make as well as the grade. For example,
never ask for XL , A, " Double " or "
30," but always use the correct wording as
given in the columns on page 75 or 76 according to the brand chosen and see that
the oil is drawn from a container bearing the well known trade mark.
Draining
To drain the engine, gearbox or rear axle, remove the plug provided beneath each
unit, this process is assisted by opening the filler to allow ingress of air, and by
draining when the oil is warm after a run of at least
10 miles or 15 km. Under these
conditions impurities in the oil will be well mixed and will flow away with the oil
during the draining process.
Flushing Oils (see recommended Lubricants, page
75 or 76).
We advocate the occasional use of flushing oil during the draining and refilling
operation of the engine sump. The normal procedure is as follows:
Drain the sump while the engine is hot, screw in the drain plug and pour four pints
of flushing oil into the oil filler.
Start the engine and adjust the throttle so that a fairly fast idling speed is obtained.
Occasional short bursts of acceleration should be given to distribute the oil
throughout the engine and then after ten minutes running drain the sump and repeat
the operation with a fresh charge.
With very dirty engines, it may be necessary to lengthen the period somewhat or
even to use a third charge of flushing oil.
Refill the sump with new engine oil.