J jimmyducati New member Mar 10, 2015 #1 Was going to change out the rdu fluid today with some Lucas gear oil I had in the garage, but it's 80w-90 conventional, good idea/bad idea?
Was going to change out the rdu fluid today with some Lucas gear oil I had in the garage, but it's 80w-90 conventional, good idea/bad idea?
S SHOdded Moderator Staff member Mar 10, 2015 #2 Should be fine. Manual does not specify synblend or synthetic for the RDU. This is the info on the Motorcraft product (properties starting pg 9): https://www.fcsdchemicalsandlubricants.com/main/product.asp?product=SAE%2080W-90%20Premium%20Rear%20Axle%20Lubricant&category=Transaxle%20Fluid Lucas product: http://lucasoil.com/products/gear-oil/gear-oil/lucas-heavy-duty-80w-90-gear-oil Whatever replacement product you use should meet XY-80W90-QL /WSP-M2C197-A/GL-5/MT-1 standards.
Should be fine. Manual does not specify synblend or synthetic for the RDU. This is the info on the Motorcraft product (properties starting pg 9): https://www.fcsdchemicalsandlubricants.com/main/product.asp?product=SAE%2080W-90%20Premium%20Rear%20Axle%20Lubricant&category=Transaxle%20Fluid Lucas product: http://lucasoil.com/products/gear-oil/gear-oil/lucas-heavy-duty-80w-90-gear-oil Whatever replacement product you use should meet XY-80W90-QL /WSP-M2C197-A/GL-5/MT-1 standards.
