What will happen if I don't change the engine oil straight away?

I have a two year old Citroen Relay van (2.0 diesel). It had an oil and air filter change a year ago at 4000 miles. It's now done another 4000 miles and a change oil warning light comes on at the start of each journey. I'm on the garage's waiting list for the van to be serviced. The van handbook is light on detail. Can you tell me if the van will go into limp home mode at some point as I have no idea when I will be able to get it serviced?

Asked on 4 June 2020 by Faye

Answered by Dan Powell
The oil and filter should be changed every 12 months or 12,000 miles (whichever comes first). It shouldn't go into limp home mode, but the old oil might increase general wear and tear due to fact it will lose its lubricity over time.
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