Brought my 2006 Lexus GS300 in about 1k miles ago complaining about burning oil. They put me on a 1k mile oil consumption test. Brought it in this morning. They added oil and asked me to come back in another 1k miles. Here we go again. Hope they recognise that this is a latent defect with thier piston rings and fix it at no cost. I hope they treat us Canadians similarly like they did in the States. I will keep you posted.
Found this on the IS forum which is similar to the GS issue regarding oil consumption and what the dealer does in regards to the test. From service bulletin L-SB-0124-12:
Perform an oil consumption test to determine the consumption rate.
1. Confirm the engine oil level is full.
2. Mark the oil dipstick to indicate the current level.
3. Replace the oil dipstick.
4. Mark the oil dipstick, oil drain plug, and oil fill cap to prevent/indicate tampering during the test.
HINT
Use tape, sealer, cable ties, or equivalent to mark the oil dipstick, oil drain plug, and oil fill cap.
5. Advise the customer to drive the vehicle normally for 1,200 miles and return for inspection
Diagnostic Procedure B (Continued)
6. Determine the quantity of oil that was consumed in 1,200 miles.
Was the oil level more than 1 quart low after 1,200 miles of normal driving?
• YES — Go to the Repair Procedure.
• NO — This bulletin does NOT apply. Warranty guideline for acceptable oil consumption is
1 quart per 1,200 miles of operation. No warranty claim should be filed.