Originally Posted by mudhut
That's quite worrying SR.
You being the fastidious type wouldn't have had any oil additives put in would you? I'm sure you wouldn't.
You're right mudhut. I am very much so the fastidious type
To clarify, the gearbox / diff oil was very dark grey in colour which Ned said pointed to a lot of heat. Saying that, Clare has been known to dabble Scooby's and even a GT40 from time to time
Perhaps it was to be expected, even at 20k miles? (what's the change interval for gerabox oil

)
I do use ZX1 in my engines. In fact, I swear by it. The GT now gives c28mpg where it would give c24mpg before. It also revs more easily and just feels "better"
