Royal Purple Duralec Ultra 15W40 Synthetic Motor Oil - 1 Gallon (Case of 3) MCK-696-2P-G1 Specify by adding suffix "S"

Specify by adding suffix "S"

1/2 in NPT Male to 5/8-18 in Female

1978-1979 Mercury Zephyr Base CID 302 Naturally Aspirated GAS

Bert Shifter Rods

Precision laser cut steel rails help minimize the chance of oil pan leaks on 289-302 based small block Ford Engines

Royal Purple Duralec Ultra 15W40 Synthetic Motor Oil - 1 Gallon (Case of 3) MCK-696-2P-G1 Specify by adding suffix "S"Product Description: Motor Oil Duralec Ultra 15W40 Synthetic 1 gal Jug Set of 3 Royal Purple was founded in 1986, but its roots go back much further. Royal Purple Motor Oil increases horsepower and torque. Royal Purple XPR Extreme Performance and Royal Purple XPR Racing oils are formulated for ultra performance applications such as racing, modified engines and off road use. Professional engine builders and race teams have cited increased horsepower