Extreme Extreme Diesel Oil 15W40 Motor Oil - 1 Gallon Jug SS981506ERL 235 lb/in Spring Rate

235 lb/in Spring Rate

1957-1979 Ford Thunderbird

080 intake valves

Vehicle Applications: Mazda Miata 1997-1990Vehicle Applications: Mazda Miata 1997-1990

not 'cast'

Extreme Extreme Diesel Oil 15W40 Motor Oil - 1 Gallon Jug SS981506ERL 235 lb/in Spring RateProduct Description: Motor Oil Extreme Diesel Oil 15W40 Conventional 1 gal Jug American owned Extreme Brand Products has been a leading innovator of premium quality lubricants for racing and high performance applications. Their line of oils and transmission fluids delivers maximum protection and lubrication under the most extreme racing conditions, and are available in a wide range of formulations for virtually any application, on or off the track.