como poner a tiempo los arboles de levas
48 HP stock
As much as Jon D says it should.
90mph
general reasons head gaskets can go - head is warped, block is warped/not flat, block is steel and head is aluminum (Saab did this in 1972), so the metals expand/contract at different rates causing the gaskets to blow.
10w 40. I only use the oil from the canam dealer and have been fine