a tiny 1200cc engine developing 84 HP is stressed pretty good ,would use best oil one could ,,id suggest yes ,castrol, valvoline ,mobil one , penzoil, ultra synthetic , probably a few others too as long as get the best and full premium synthetic . being from east , im kinda partial to penzoil , grew up with it in all kinds of hot rods and racing engines , did have excellent results with mobil,one synthetic in my 92 ford 150 pu / with 351 eng, was losing some oil,pressure/erratic; and that cured it completely and sounds and runs much better .and uses no oil,,none!