Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.
This is an engine oil additive that increases oil viscosity to improve compression and seal piston rings that helps to reduce exhaust smoke and crankcase gases caused by oil burning
