Need advice

[Alansr]

I have a customer that just bought an older truck. I haven't seen it yet but he said it was used in the oil fiddles and has a strong smell of oil in it. Do you guys have any recommendations of what to use for really strong oders? I have a steamer, steam vac, and course brushes for the carpets. This is my first customer looking to get rid of an Oder. Thanks for the advice.