Red Line Motorcycle Oil comes in 4 weights on our shelf: 10W-30, 10W-40, 20W-50 and 20W-60. Inside a single line the additive package is the constant and the viscosity is the variable, so this is a one-decision page — match the manual.
Priced by weight: 10W-30 from $23.05 for the 1 qt, 10W-40 from $24.74 for the 1 qt, 20W-50 from $24.74 for the 1 qt and 20W-60 from $24.74 for the 1 qt. 10W-30 is the cheapest way into the line and 10W-40 the dearest, a $1.69 difference — which is not a reason to pick one, since the manual decides that.
We carry 2 Red Line lines in total — Motorcycle Oil plus Powersports. Motorcycle Oil is the cheapest of them to get into, at $23.05. Comparing across them is a fair way to shop; comparing a Red Line grade against the same grade from another maker is what the weight pages are for.
Bottle sizes in this line: 1 qt. 3 of the 4 are available now; the rest come in on a supplier order. Prices shown are ours and come from the catalog, not a list price.