is350NoSno

hi, today lexus told me im burning oil should i switch weights or brands to slow down the oil burning? or possibly stop it?

idoke1

iTrader: (5)

It depends. Burning slight oil is ok but alot is bad. How many miles on your IS? How frequent do you change the oil?

Gville350

iTrader: (10)

Create a journal, monitor the oil dipstick, write down how much oil you have to add and the duration. Are you getting any blue smoke out of the exhaust? Are you seeing an performance or difference in fuel mileage? Are you sure the oil isn't simply leaking out somewhere? Pull some spark plugs and see if the plugs are "wet" with oil.

Mike_1GO

iTrader: (2)

whats the mileage? what did lexus recommend?

Mike_1GO

iTrader: (2)

you may want to consider switching to a higher mileage oil like Castrol or Penzzoil.

sw2oboi

iTrader: (12)

^ switching to a high mileage oil is a good idea. I believe the acceptable tolerance is 1 qt for every 1000 miles. You could up the weight to 10W instead of 0/5W.

panda327

iTrader: (3)

My IS250 is burning engine oil like mad too..

I am using Mobile 1 5w-30 and changing at regular intervals at 8000km and the mechanic said that there is barely any oil left at oil change. One time, even the engine warning light came on.

The mechanic told me to switch to 10w-30 to see if it helps with prolonging the oil life.

Mike_1GO

iTrader: (2)

I would switch to a higher mileage oil immediately and begin monitoring oil levels every 250-300 miles or so. if its burning more than a quart every 1000 miles, then make the switch to 10w30 high mileage. run the engine, give it gas and see if theres blue smoke emitting from the tail pipes. if there is that's a sign of burning oil. ive seen a lot of bmw 7 series in the past with blue smoke so its a common thing for higher mileage engines to do that. all depends on how hard the car was driven and how well it was maintained by the previous owner.

darkdream

Use something besides mobil 1. That company's oil burns easier than most.

skullkandy

from my experience

ive used: 5w-30 full synthetic - which burns oil like crazy
5w-30 semi synthetic - which burns less (don't have to top up quite often)
10w-30 full synthetic - which burns way less and also reduces my start up rattle.

Will be going back to 10w for the next oil change, it runs well for my old 07 =]

Gville350

iTrader: (10)

Everyone must keep in mind that each motor is driven differently, broken-in differently, and therefore has worn differently. Just because one oil burns through one owners IS350, doesn't mean it will on all others.

I for one have been using Mobil 1 FULL SYN since day 1, and have yet to loose a drop of oil on the dipstick in-between oil changes.

darkdream

Full synthetic is many times semi synthetic.

darkdream

Mobil 1 is known to burn easier among many autocross/track people. They changed their formula from 100% synthetic a few years ago. Yes, it might not be noticeable on daily driving if the car wasn't abused. I have a 07 IS350 which I am the original owner of and it never burns regardless of what brand I use, but I prefer amsoil after finding it to be the best when racing.