I'm in the process of changing the front differential oil...the stuff looks like Mcdonalds Mustard sauce for the Chicken McNuggets...I couldn't find a synthetic oil in the recommended 80-90 weight, so instead I gots Redline Oil in a 75-90 weight. Is this okay to use? would I be hurting anything by going to a lighter weight oil? any help would be appreciated...thanks.
2002 Pewter GMC CC D/A Long Bed 4X4 <br />Mag-Hytec Diff. Cover<br />Bedrug bed cover<br />Pace Edwards electric rollbed cover<br />Transfer Flow 56 gal fuel tank<br />Banks 4\" Exhaust<br />Kodiak Electric steps<br />Red Line Synthetic Lubricants <br />(from head to toe)<br />Amsoil Air Filter<br />FilterMag - Super,Duper oil filter magnet<br />Super Magnet - Magnetic engine oil pan plug