NX Oil Consumption !!!
#1
Driver School Candidate
Thread Starter
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Hi Everyone,
I just want to say Kudos to every body on CLUB LEXUS forums excellent work and information.
I have a question regarding the NX oil consumption. I do have an F-Sport model with only 2,400 KM. I was doing a routine check on the car this morning, and I noticed that the engine oil was low, to be exact it was 3/4 full on the dipstick. Car was inside the garage overnight.
I did take a closer look at the engine all around to see if I can spot an oil leak or something however there was nothing. Now from my previous checks I know the car was full right to the full mark on the dipstick.
I did call three different Lexus dealers in the GTA (Toronto) area and I had different answers.
1) I should get the engine running until it reach optimal temperature, then shot off the engine and wait for couple minutes then do an oil check.
2) This is not normal for this car bring it in for service.
3) This is normal for Lexus, 1qt of oil per 1500 KM.
So my questions to you guys is has anybody check there engine oil? if so is there any loss?
Regards,
I just want to say Kudos to every body on CLUB LEXUS forums excellent work and information.
I have a question regarding the NX oil consumption. I do have an F-Sport model with only 2,400 KM. I was doing a routine check on the car this morning, and I noticed that the engine oil was low, to be exact it was 3/4 full on the dipstick. Car was inside the garage overnight.
I did take a closer look at the engine all around to see if I can spot an oil leak or something however there was nothing. Now from my previous checks I know the car was full right to the full mark on the dipstick.
I did call three different Lexus dealers in the GTA (Toronto) area and I had different answers.
1) I should get the engine running until it reach optimal temperature, then shot off the engine and wait for couple minutes then do an oil check.
2) This is not normal for this car bring it in for service.
3) This is normal for Lexus, 1qt of oil per 1500 KM.
So my questions to you guys is has anybody check there engine oil? if so is there any loss?
Regards,
#2
The pursuit of F
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Welcome to the forum and hope you're enjoying your NX.
When my wife brought it in for complimentary 8k km servicing last week, they topped off the engine oil. I thought it was abnormal but they made no references to it being unusual.
When my wife brought it in for complimentary 8k km servicing last week, they topped off the engine oil. I thought it was abnormal but they made no references to it being unusual.
#3
Lexus Test Driver
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Given that its a turbo engine, its not entirely shocking that it drinks a little oil. However, a qt of oil every 900ish miles is a little ridiculous.
I personally haven't checked mine at 1200 miles, but I'm going to take it in for an oil change next week (~1500 miles) and I'll ask what the level was.
That's a lot of blowby though....
I personally haven't checked mine at 1200 miles, but I'm going to take it in for an oil change next week (~1500 miles) and I'll ask what the level was.
That's a lot of blowby though....
#4
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Hi Everyone,
I just want to say Kudos to every body on CLUB LEXUS forums excellent work and information.
I have a question regarding the NX oil consumption. I do have an F-Sport model with only 2,400 KM. I was doing a routine check on the car this morning, and I noticed that the engine oil was low, to be exact it was 3/4 full on the dipstick. Car was inside the garage overnight.
I did take a closer look at the engine all around to see if I can spot an oil leak or something however there was nothing. Now from my previous checks I know the car was full right to the full mark on the dipstick.
I did call three different Lexus dealers in the GTA (Toronto) area and I had different answers.
1) I should get the engine running until it reach optimal temperature, then shot off the engine and wait for couple minutes then do an oil check.
2) This is not normal for this car bring it in for service.
3) This is normal for Lexus, 1qt of oil per 1500 KM.
So my questions to you guys is has anybody check there engine oil? if so is there any loss?
Regards,
I just want to say Kudos to every body on CLUB LEXUS forums excellent work and information.
I have a question regarding the NX oil consumption. I do have an F-Sport model with only 2,400 KM. I was doing a routine check on the car this morning, and I noticed that the engine oil was low, to be exact it was 3/4 full on the dipstick. Car was inside the garage overnight.
I did take a closer look at the engine all around to see if I can spot an oil leak or something however there was nothing. Now from my previous checks I know the car was full right to the full mark on the dipstick.
I did call three different Lexus dealers in the GTA (Toronto) area and I had different answers.
1) I should get the engine running until it reach optimal temperature, then shot off the engine and wait for couple minutes then do an oil check.
2) This is not normal for this car bring it in for service.
3) This is normal for Lexus, 1qt of oil per 1500 KM.
So my questions to you guys is has anybody check there engine oil? if so is there any loss?
Regards,
Regardless of how you drive your vehicle, if your NX is currently consuming oil, obviously keep track of it, add as necessary but also give your engine time (mileage) to "break in". Remember, your engine has a synthetic oil which prevents engine parts from wearing less than conventional oil, but on the other hand, an engine needs to wear in some to effectively seal or mate the surfaces together. If you continue to notice your engine is consuming more oil than what the owners manual states (say at about 15,000 miles), keep receipts and detail records of your oil consumption history. If things do not improve and get worse, you will have evidence to present to the service manager, regional manager etc., for a repair or engine replacement.
Wish you the best,
Ray
#5
#6
Lexus Test Driver
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Black soot on the tail pipe does not always signify an oil issue. It can also represent that you are running rich, and there is nothing wrong with that. Your tall tail sign of oil consumption is bluish smoke from your exhaust, and the very potent smell of oil from your exhaust pipe.
#7
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Few things, I have had the up pipe/charge pipe etc (post turbo) off on a 15,16 and 2018 NX. In all off them, the mileage was BELOW 5K, And in all of them there was oil lining the pipes. I work at Lexus so I investigated this. Lexus has rather heavy blow-by through the PCV on there inline 4 cylinder boosted engine (8AR-FTS). They have tried addressing this with a semi dry sump set up and multiple internal baffles to catch the oil before the positive crank pressure vent, while still releasing pressure. The semi-dry sump set system is rather interesting as an engineer to look into. There is a valve that closes off the main sump from the engine when it is started. So, the engine runs off a much smaller amount of oil then when the engine is shut off, that oil re-mixes with the main sump. On top of that there is a windage tray around the crank even for the small amount it uses during run time. This helps pull oil away from the crank and other rotation parts to prevent air cavitation. All of this is still not enough, the engine still pulls a good amount of oil up with the pressure when venting which gets routed back into the intake. Lexus allows/accepts a level of consumption that is 1qt per 1000 miles. This does not mean its going to be 1qt every 1000 leading up to 3qt per 3K.. etc etc. This number is negatively exponential on the amount of oil left in the system after pressure purges off. essentially it gets to a level that stops picking up oil with pressure. But once the engine is restarted, you go back to that higher level with means oil consumption/blow by til it falls back down. This is effected by temp, driving style, elevation.. so many factors. I digress....
This engine NEEDS a catch can. A proper catch can with a proper internal baffle. Only catch is the air would need to route from the can back to the intake because that is metered air.
This engine NEEDS a catch can. A proper catch can with a proper internal baffle. Only catch is the air would need to route from the can back to the intake because that is metered air.
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#8
Pole Position
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Our 2015 NX has 30K miles and I change the oil every 5K miles. It does not use enough oil between oil changes to see any change on the dip stick. There might be a slight amount of oil going through the PVC valve, but it’s not enough to cause problems or warrant a catch can.
#9
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I have noticed NO oil consumption in 6 000 miles and am going to do oil change tomorrow. Oil didn't really darken, I'll do it anyway, as I had some maintenance minder messages popping up, so I want to do my own oil change and reset everything.
That was very informative post, skyshadow.
I watch a bunch of Russian Youtube automotive videos and their consensus is - any turboed engine MUST have very good quality oil, for turbo lubrication and that turbos do not last more than 60-100 000 km. That's 45 - 60 000 miles. They are all adamant on turbos to be replaced somewhere in that range and they have more experience with turboed engines than we do. Simple reason - Europe had turboed 4 cyl engines way before the wave hit US and Russia has plenty of them to play with before us.
That was very informative post, skyshadow.
I watch a bunch of Russian Youtube automotive videos and their consensus is - any turboed engine MUST have very good quality oil, for turbo lubrication and that turbos do not last more than 60-100 000 km. That's 45 - 60 000 miles. They are all adamant on turbos to be replaced somewhere in that range and they have more experience with turboed engines than we do. Simple reason - Europe had turboed 4 cyl engines way before the wave hit US and Russia has plenty of them to play with before us.
#10
Intermediate
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Few things, I have had the up pipe/charge pipe etc (post turbo) off on a 15,16 and 2018 NX. In all off them, the mileage was BELOW 5K, And in all of them there was oil lining the pipes. I work at Lexus so I investigated this. Lexus has rather heavy blow-by through the PCV on there inline 4 cylinder boosted engine (8AR-FTS). They have tried addressing this with a semi dry sump set up and multiple internal baffles to catch the oil before the positive crank pressure vent, while still releasing pressure. The semi-dry sump set system is rather interesting as an engineer to look into. There is a valve that closes off the main sump from the engine when it is started. So, the engine runs off a much smaller amount of oil then when the engine is shut off, that oil re-mixes with the main sump. On top of that there is a windage tray around the crank even for the small amount it uses during run time. This helps pull oil away from the crank and other rotation parts to prevent air cavitation. All of this is still not enough, the engine still pulls a good amount of oil up with the pressure when venting which gets routed back into the intake. Lexus allows/accepts a level of consumption that is 1qt per 1000 miles. This does not mean its going to be 1qt every 1000 leading up to 3qt per 3K.. etc etc. This number is negatively exponential on the amount of oil left in the system after pressure purges off. essentially it gets to a level that stops picking up oil with pressure. But once the engine is restarted, you go back to that higher level with means oil consumption/blow by til it falls back down. This is effected by temp, driving style, elevation.. so many factors. I digress....
This engine NEEDS a catch can. A proper catch can with a proper internal baffle. Only catch is the air would need to route from the can back to the intake because that is metered air.
This engine NEEDS a catch can. A proper catch can with a proper internal baffle. Only catch is the air would need to route from the can back to the intake because that is metered air.
#12
Driver School Candidate
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I do oil changes on our 2016 nx200t and 2017 is200t every 5k miles. The both drain at least 1/4 qt less when I do the oil changes. I just assumed that was normal. I wondered if I went the full 10K miles then how much oil would be burned up. The oil is very thin so it did not surprise me.
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