My car also was in limp mode due to engine misfire caused by same oil burning reason. Went with the 2nd option from agents since newer parts not available. Cost me 80k with the service. They change to 15w-40 oil ( doesn’t understand the logic ) . Still too early to comment on repair as only done 700km after it.
I didn’t go for the reconditioned engine replacement because I’m fed up with my luck. But apparently it’s a very common thing done by the local mechanics.