RX300 1MZ-FE slight? oil consumption

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I've been doing oil change on parents car which now has close to 160k km on it.

For the past 3 oil changes, I've put in Motomaster Syn F1 5w30 which from my research is made by Shell.
Oil filters have been purolator classic or pureone.

I used to feed this car with Valvoline conventional and then upgraded to PP. I did all these based on 8K km OCI. PCV has been replaced 18K ago, old one was still working when I pulled it off.

With the F1, first two oil change I did 10k km OCI and just finished changing the 3rd time yesterday at 8.5k km. I know the engine is hard the oil, but most of the time this vehicle is driven on the highway, so I thought it wouldn't matter much.

Based on the manual, 4.7L should go in with filter, or 4.5L with no filter. I usually just dump the whole 5L in and dipstick would show that it's not overfilled.

I measured the oil drained plus whatever I can get out of the oil filter. I've been getting around 4.1-4.3L plus if there are still any remaining in the filter and the oil catch container. I usually wait till oil only drip very slowly before putting the drain bolt back on.

Is this consider a lot of oil burnt or I can just safely continue? Do sludge usually cause even more oil burnt or mine is showing the signs of it?

I'm going back to 8K km OCI with synthetic, my next and last bottle stored is synpower. Should I go back to PP for its cleaning ability? I remember the engine was also burning that oil too.
 
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Well, what is the level on the dipstick before you drain it?

I have 190k miles on my RX and I don't burn a drop of oil using Pennzoil Platinum 5w30 in a 5k OCI, once 7.5k OCI. But, I try to keep my oci at 4-5k miles.
 
Assuming no oil was added - Less than 1 liter consumed over 8000 km is excellent.

I would consider excessive consumption to be 1 liter per 2000 km.

My 2000 Sienna with the 1MZ-FE uses about 1 liter per 5000 km.
 
No oil added during these 8k-10k. I just check dipstick when approaching the oil change time.

I guess this is another reason why I feel weird that the dipstick doesn't show I'm low but measuring the actual fluid that came out shows otherwise.
 
Originally Posted By: wing0
Thanks.

I'll keep an eye on the dipstick again closer to 8k.



Wait a minute, you go 8k on oil changes in the notorious 3.0l ?!!
DONT DO IT MAN!! Your begging for problems!
 
Originally Posted By: lexus114
Originally Posted By: wing0
Thanks.

I'll keep an eye on the dipstick again closer to 8k.



Wait a minute, you go 8k on oil changes in the notorious 3.0l ?!!
DONT DO IT MAN!! Your begging for problems!


Kilometers. That's just under 5,000 miles.
 
5,000 miles/8,000 km on the 1MZ-FE should be good, but I would NEVER do an extended OCI on these, and highly recommend synthetic only. A nice 5w30 PP would serve it well.
 
Originally Posted By: lexus114
Originally Posted By: wing0
Thanks.

I'll keep an eye on the dipstick again closer to 8k.



Wait a minute, you go 8k on oil changes in the notorious 3.0l ?!!
DONT DO IT MAN!! Your begging for problems!


haha, I specifically wrote km after each OCI. If translated to miles, I do OCI between 5-6K miles.

I've been running synthetic on the engine since it was at 80k km.
Now it's at 160k. Not going to cheap out on the oil for this engine.
 
Originally Posted By: wing0
Originally Posted By: lexus114
Originally Posted By: wing0
Thanks.

I'll keep an eye on the dipstick again closer to 8k.



Wait a minute, you go 8k on oil changes in the notorious 3.0l ?!!
DONT DO IT MAN!! Your begging for problems!


haha, I specifically wrote km after each OCI. If translated to miles, I do OCI between 5-6K miles.

I've been running synthetic on the engine since it was at 80k km.
Now it's at 160k. Not going to cheap out on the oil for this engine.



Got ya, and definitely keep using the Synthetic oil for that motor. And I`m sure it will serve you well.
 
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