[Mgs] 1973 MGB Oil Changes

[Paul Hunt]

They were never tapped for a drain plug because they don't need it.  
Unlike rad and fuel tank which were originally then deleted to save money.

Hot draining should clear more muck then cold.  My roadster (leaving 
what's in the cooler, hoses etc.) starts off clean but then gradually 
gets browner,  I've seen them classed as a 'dirty' engine.  If you have 
blow-by it'll probably be worse.  My V8 came out pretty clean but then I 
used to treat it to an engine flush every other change putting it in a 
hot engine and running it for a few minutes before draining when it came 
out black.  You could try a flush, but then that can dislodge old muck 
which circulates and causes other problems.

Just do regular oil and filter changes, using good quality products, and 
enjoy driving it.

PaulH.

On 21/01/2026 21:23, Joel Martin wrote:
> Thanks for the reply.  It is just that the nice clean oil mixed with 
> the old oil left in the oil cooler is no longer nice and clean.  Where 
> the transmission oil still looks like it just came out of the bottle 
> .  Tap the oil cooler on the bottom looks like best bet.  Wonder why 
> they are not made that way.
>
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