Motul 5100 — 5 weights
Motul 5100 runs 5 weights deep here — 10W-30, 10W-40, 10W-50, 15W-50 and 20W-50 — which puts it among the broader lines we stock, behind Motul 7100 at 7.
Pick your weight
Every Motul 5100 bottle in this list states semi-synthetic on the product itself. Where a bottle does not state its base stock we leave the field blank rather than assume one.
Priced by weight: 10W-30 from $23.01 (2 sizes), 10W-40 from $22.32 for the 1 qt (2 sizes), 10W-50 from $22.32 for the 1 L (2 sizes), 15W-50 from $22.32 (2 sizes) and 20W-50 from $22.32 for the 1 L. 10W-40 is the cheapest way into the line and 10W-30 the dearest, a $0.69 difference — which is not a reason to pick one, since the manual decides that.
Per litre the spread inside this line is real: the 4 L in 10W-50 works out to $20.76 a litre, against $23.59 for the 1 qt in 10W-40. If your engine takes more than a couple of litres, the larger bottle is the cheaper way to buy the same oil.
We carry 5 Motul lines in total — 5100 plus 3000, Scooter Expert, 7100 and 300V. 5100 sits 2nd of 5 on entry price, at $22.32. It is also the only semi-synthetic Motul line we stock. Comparing across them is a fair way to shop; comparing a Motul grade against the same grade from another maker is what the weight pages are for.
Bottle sizes in this line: 1 qt, 1 L and 4 L. All 9 are available now. Prices shown are ours and come from the catalog, not a list price.