Steve:
Check for gasoline in the oil. If you have a condition that is allowing excess
fuel into the cylinders,running too rich, etc., that fuel can wash down any
carbon
deposits in the engine and cause the oil to turn black right away. Very common
during cold hard-starting conditions. We see it a lot in the winter from
persons
who have trouble starting their fuel- injected cars- maybe they've got old
plugs,
wires, batteries, you name it- anyway they'll start pumping the accelerator
pedal....................
It is normal for the oil to turn darker the longer it is in the engine. One of
its functions is to clean deposits- hence the detergents present in modern oils.
But if it smells like gas, change it quickly and find out why you're getting
unburned fuel in the cylinders.
Jeff Johnson
'76 TR6 with (normally) clean oil
LBOTTOM2 wrote:
> This is likely to be a silly question, but since I've conceded to mother-
> hening this car...changed the oil over the summer (have only had this car
> since summer) and each time I checked the level, it was OK and the oil
> appeared new and clean. Now suddenly the oil is jet black and with very little
> highway (or garage idling) use/time. I suppose this occurs normally with time
> and use, but just in case...
>
> Steve
> 72 TR6
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