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[I_want_an_Omega]

My Mk4 Mondeo is fitted with an oil quality monitor which will prompt for an early oil service if needed. I hope to never see it come on as I am changing the oil every 3,000 miles anyway.

My question is how exactly do these work? Is it a chage of an optical characteristic perhaps?

[danzigfan]

AFAIK this systems only calculate when the next oil change should be - depending on driving style...etc....
My opinion...you 'll get less than expected out of your car if relaying on that sensor. And that's the main purpose of this sensors

[I_want_an_Omega]

AFAIK this systems only calculate when the next oil change should be - depending on driving style...etc....
My opinion...you 'll get less than expected out of your car if relaying on that sensor. And that's the main purpose of this sensors

I am sorry - but I think you are wrong. 

[danzigfan]

Maybe on some Merc you'll get sensor which electricaly tests conductivity of oil inside the sump but definately not in Ford or GM

[scottambrose]

Loads of audis chave had these for a while if you put the wrong oil in or it gets allmanky it wans you and puts it in limp mode

[I_want_an_Omega]

Maybe on some Merc you'll get sensor which electricaly tests conductivity of oil inside the sump but definately not in Ford or GM

why not ?

[scottambrose]

Fords are quite complex nowadays they use low saps oil and i wouldnt be surprised if it did have sensors. Longlife oil was designed designed to work with how you drive. I get asked how ling does longlife oil last? It could20k it could be 3k depending how you drive and what journeys you do

[Marks DTM Calib]

They only have a pressure sensor, the oil life is calculated based on pressure and useage