[Ralf S.]

Generally the bigger the numbers, the thicker the oil. 10W40 is thicker than 10W30 and also 5W40.

Your beast wants 10W40, semi-synthetic. Look for an API rating on the bottle. It will probably be SL, or SM etc. and your engine only needs SG.. so any semi-synthetic will be good enough. This is not the super-expensive (fully synthetic) stuff (rated SN maybe)... though that stuff stays in grade longer.

Your change interval is 12,000 miles and semi-synth' can do it.

Ralf S.

 

[Ralf S.]

5W40 is good. It sounds like 5W40 may be the actual recommended grade for Canada anyway, if you can find that easily but not 10W40.

I'd guess in winter it's a bit parky there, compared to Europe, so 5W40 is probably preferable to 10W40 (Euro' spec.. but our temps range from 0C to around 25C). If it's generally cooler there (minus centigrade commonplace), then 5W40 would be a better option than 10W40.

Don't use a 15W50 or 10W60 unless it's just for the summer months and your summers are scorching hot. In the winter that heavier oil will be like treacle and your oil pump will struggle to circulate it.


Ralf S.