Not a mechanic by any stretch of the imagination, but I want to change the hydraulic fluid and filters on my Gravely Pro-Turn.
Dealer wants $191.00 for parts and $250.00 to do the hydraulic fluid change. Walmart has a 5 quart jug of Pennzoil for $16.47. Owner Manual says use 20w-50, with SL API classification. The Jug of Pennzoil says "SAE" on it - can I still use it?
1 quart bottle at Autozone says, "Meets or Exceeds API SM Service Classification." Sure gets confusing.
