The manual for my 2001 Dodge Ram (2-wheel drive, limited slip rear differential) calls for an 80W90 API GL-5 and also a "friction modifier" (about 50 ml).
Castrol sells a gear oil, Axle Limited Slip 80W90 API GL-5, and says that it is for "cars, trucks, motorcycles, atv's, scooters". Regarding "limted slip", on the back label it says only this: "Meets the service fill requirements of conventional and limited slip differentials ".
My manual calls for a gear oil that "should have MIL-L-2105C and API GL 5 quality specifications" but nowhere on the label is there any mention of any specification other than API GL5.
I understand that it is somewhat important for limited slip differentials to have the appropriate friction modifier, and I see other gear oils on the shelf that do not mention or have the term "limited slip" on their label. But this Castrol does. Should I assume it will meet the specs I need?
Castrol sells a gear oil, Axle Limited Slip 80W90 API GL-5, and says that it is for "cars, trucks, motorcycles, atv's, scooters". Regarding "limted slip", on the back label it says only this: "Meets the service fill requirements of conventional and limited slip differentials ".
My manual calls for a gear oil that "should have MIL-L-2105C and API GL 5 quality specifications" but nowhere on the label is there any mention of any specification other than API GL5.
I understand that it is somewhat important for limited slip differentials to have the appropriate friction modifier, and I see other gear oils on the shelf that do not mention or have the term "limited slip" on their label. But this Castrol does. Should I assume it will meet the specs I need?