It's been about 200 miles since I changed the engine oil and it still shows golden on the dipstick. Is it doing its job?

I've changed oils on many engines and I've never seen this before.

I have to say that during the change, I did take the sump off to reseal it and washed it as well, but surely it should've darkened by now?

300Tdi

Maat said:

It's been about 200 miles since I changed the engine oil and it still shows golden on the dipstick. Is it doing its job?

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IMO no worries about that especially if you didnt drive it like a race car and it's a high quality oil

Thanks for the reply,

If I remember correctly, it's a Castrol "GTX", I think the main selling line was that it keeps your engine clean - although I imagined this would mean cleaning all the built up gunk and inevitably getting dirty.