Camry has 4 quarts of VP Raceing 5W30 and 2 onces of Power Service Diesel Lube Extender. So far in the 7000 miles it has been in the car it has only used 1/4 of a quart. I figured it would use some since this oil did not have the best NOAK number to start with. 1/4 quart though is not bad for 7000 miles. My goal is 10,000 mile or 6 months wich ever comes first. June will make 6 months so I am sure I will not make 10,000 miles.
For the most part the main issue I have seen in other peoples UOA with this oil is TBN retension. So at 3 months in I added 2 onces of the Diesel Lube extender. I do not want to over treat so that is why I went with 1/2 an once perquart instead of 1 once per quart. I might even pay for TBN testing this time around just to see what I have.
I can not remember what I put in the wifes car. Her Buick leaks from the pan so I do not put the good stuff in it normaly. I normaly use name brand dino 10W30 in it but I think I used 15W40Delo or 5W40 RTS last time.