I have a Euromarket e30 touring (1993 but yes it's an e30). It has no CEL and the Christmas lights do not come on to indicate that service is required. But one day a green light came on on the dashboard with no indication of what it was for. I bought this instrument hoping it would be an oil light. Sure enough, it worked exactly according to their instructions (to be clear, trust their instructions - and don't feel obligated to use paperclip instructions with this tool). Now I think it's time to change the oil.
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