Oil Consumption On 2006 Gs300

[frankygs300]

My vehicle is losing 2 quarts of oil, every oil change. When I called my dealer, I was told that, the oil consumption on this particular model is 1 quart, every 800 miles, which sounds ridiculous to me! Has anybody ever had this kind of experience, please share.

Thanks,

[PJ S]

Don't know if you ever got the issue resolved or not, but it sounds like you've got poorly sealing piston rings.

You don't mention mileage, which if high, might be worth changing the oil to a slightly thicker grade - 5w-40 say, instead of 5w-30/0w-30 that is generally used.

I'd be throwing a good engine flush into the engine asap - BG Products/Liqui Moly/Motul - then refilling with standard oil again and monitoring how it does then.

If still going through oil, then another flush and drain, before switching to the 40 grade, which should fix it, at the expense of a bit of mpg.

[Grizzly Man]

I'm losing about the same, plus getting some rough idle when cold. Looking at Clublexus, these COULD be symptoms of issues with the piston rings (which seemed to have been redesigned in 2010ish) as noted above, and perhaps a blocked PCV valve. Carbon build up on the back of the valves would be highly likely as well. This seems to be becoming an issue on the direct injection 3GR-FSE engine. There is a TSB in operation in the US involving replacing the pistons - I don't think it applies over here though. The cost of this procedure out of warranty is eye watering though......more than the car's worth TBH!