specifications. If your vehicle was originally charged with R12 refrigerant, for example, the oil type specified, 'mineral', will not apply. Additionally, General Motors issues Bulletin # 02-01-39-004B replacing PAG 150 oil with a lower viscocity oil.
The term square in reference to roofing materials refers to 100 square feet of roof area. One square of slate is the amount of slate that it takes to cover 100 square feet of roof area. A 10 foot x 10 foot section of roof would equal one square. So would a 4 foot x 25 foot section. Ditto for a 5 foot x 20 foot.
A roof surface in the shape of a rectangle that is 30â long at the drip edge and 20â from the drip edge to the ridge has 30â X 20â = 600 square feet of surface area or 6 squares. A square of roofing slate refers to the minimum number of installed slates of a certain size required to cover 100 square feet.