Hi all, got a high pitched squeak from the bonnet area of the 90. Not mechanical, but related to vehicle motion as it's going down the road. I sprayed lubricant all over the latch and rubber buttons on the underside of the bonnet to no effect. Is there a grease I can use in the hinges that won't break down the rubber in there, or discolor the paint over time? The noise could be from my dash, but I don't think it is.