Motorex Top Speed 4T comes in 3 weights on our shelf: 10W-30, 10W-40 and 15W-50. 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.
Every Motorex Top Speed 4T bottle in this list states full synthetic on the product itself. Where a bottle does not state its base stock we leave the field blank rather than assume one.
Pricing is flat across the line: every one of the 3 weights starts at the same $17.50 for the 1 L, so the weight you need costs the same as any other weight in Motorex Top Speed 4T. The only price decision here is bottle size.
We carry 5 Motorex lines in total — Top Speed 4T plus Formula 4T, Cross Power 4T, Power Synt 4T and Boxer 4T. Top Speed 4T sits 2nd of 5 on entry price, at $17.50. Comparing across them is a fair way to shop; comparing a Motorex grade against the same grade from another maker is what the weight pages are for.
Bottle sizes in this line: 1 L. All 5 are available now. Prices shown are ours and come from the catalog, not a list price.