In the owner's manual they do recommend Havoline synthetic 5W-40. It can be hard to find though.oh ok. thanks. i was just curious if there was a brand that they used or endorsed.
The local Lotus dealer here uses the Castrol Syntec 5-40 when they do Lotus oil changes, Lotus' recommendation for Havoline notwithstanding.lol roaddad. i bought some castrol 5-40 and was hoping that would be ok. i thought i saw someone who posted on here they got that one and they liked it