I've had the rebuild done 5 months ago. Oil light hasn't come on, but I've just been informed that when my Mrs went on a 1000km round trip, halfway thru her father topped up the oil. How much I dont know. But I just checked the oil level now and it's 1/2 way. So I'm guessing that the oil light would have gone on if the in law didn't top up the oil. So, I'll ring my dealer on Monday and let him know. (I'll say the oil light had come on twice now) He'll want to do an oil consumption test, he'll most likely tell me that it's fail , they'll ring Toyota Australia, they'll put in a brand new turbo diesel engine. Of course they can't guarantee that the new engine isn't free of the oil consumption issue.. Only then, when the replacement engine fails I will be able to use the Lemon law and ask for a full refund