Dealer tried the usual rust proofing sale at time of purchase and when I asked him if he had ever seen a rusty tractor the deer in the headlight look on his face became apparent. The response was what? It's OilGARD for me. In this area cars are $110 but when I told them I only had half a car they reduced the cost. Their no drip formula is all you need and your choice whether you do it yearly or every other year. As for dripping, doesn't happen, not at all, temperatures are up in high 70's low 80's and no oil has dropped on my floor from the undercarriage of this car.