Vehicle & Technical > Discovery

What Engine Oil??

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robbie:
I have a 300TDi and it has developed a flashing oil warning light occasionally on tick over, but more so when the oil is very hot. I have been running it on 10/40 Semi synthetic and wonder if I should now change to 15/40 mineral as it has done 140k miles

Any info/advice would be good

mentalmoshio sophs V8i:
emmm maybe its just a case of a good oil change and flush out . oils can be so dear these days or even a faulty reading

ben_haynes:
Yes i would suggest a Decent 15/30 or 15/40 such as Castrol, i found my 200tdi used to do this a few months after an oil change using normal semi - synthetic oil then i started using Castrol Magnatec Diesel 15/40 which didnt flicker the light and it also stopped the engine using oil as fast as it used to

beast5680:
i always use a good quality 15/40 for a diesel(mainly cos i get it free) never had any trouble

Les Henson:
On a high-miler/slightly worn engine it's a good idea to use a slightly thicker oil. I use 15/30 more than any other.


Les.

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