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This is my wifes 2015 NX200t, with 75k miles. I noticed a few drops of oil on the garage floor this morning. Appears to be engine oil, limited to this small area (ATF pan on the right).... Anyone know whats going on here?
There are oil additives specifically made to "restore" leaking seals. I am not sure if we can use these in our engines, so do some research. If you can use this remedy, try it first, as it is waaaay cheaper then removing transmission and replacing main seal.
Im having the same issue on my nx200t Fsport 2015 after hitting 120k KM. Any idea how much it cost to fix? Honestly, I wasn't really expecting such an issue to happen on this car at such an age. Kinda disappointing coming from a loyal lexus fan.
Not ready to hang out mission accomplished banner yet but....
I did quite a bit of research at the time and I do believe that it was the crankshaft main seal. I followed the advice above and used an additive, about 12-16 ounces of Lucas Engine Oil Stop Leak. It took about 500 miles for the leak to completely stop, and now 7.5K miles + one normal oil change later and it's still holding. Suspect this is only a temporary solution, monitoring it closely, but so far I'm very satisfied with this <$10 solution. Correction: just checked the Lucas bottle and I used about 8-10 ounces of additive.
Last edited by JLeroy; Nov 9, 2020 at 11:37 AM.
Reason: Incorrect additive quantity.
I did quite a bit of research at the time and I do believe that it was the crankshaft main seal. I followed the advice above and used an additive, about 12-16 ounces of Lucas Engine Oil Stop Leak. It took about 500 miles for the leak to completely stop, and now 7.5K miles + one normal oil change later and it's still holding. Suspect this is only a temporary solution, monitoring it closely, but so far I'm very satisfied with this <$10 solution. Correction: just checked the Lucas bottle and I used about 8-10 ounces of additive.
I smacked a bottle of AT205 and had it operated for close to about 250 miles. The leakage seems to be improving slightly but not completely plugged. Hopefully will see similar results as you once it hits 500 miles.
Dran that oil. Turbo engines are very sensitive to type of oil. They need high quality oil that can sustain high temps in turbocharger. Stop leak oil can kill the turbocharger.
As a rule of thumb, I am against any oil additives in a modern engine, especially with vehicles that have a very specific and low viscosity 0w-20 specification. Unless you are overfilling the crankcase, when you add an additive you are displacing lubrication with that additive and therefore reducing the amount of lubricant in the system.
In a turbocharged engine, the oil lubricates the turbocharger bearings and is subject to more heat than a naturally aspirated engine. Adding an unknown additive to the mix presents a variable that can possibly lead to further deposits through coking as the additive likely heats up beyond it's designed specification. (Read here for a background on coking: https://www.fuelsandlubes.com/fli-ar...harger-coking/)
To me, stop leak from the snake oil shelf at the auto parts store is for a 20-30 year old work truck that needs to stay on the road, not a modern turbocharged engine.
It’s interesting how people do not read each post, they read the first, then make a reply.
the OP already stated that is has been 7500 miles and an oil change since adding the stop leak. If you read this, then why would you have him panic and drain the oil ASAP. Doesn’t make sense.
the end of the day, the additive has been added. The better information to gather is of the on going condition of the OP’s leak, engine condition, and turbo charger condition. We can use him as a Guinea Pig for the rest of us. If nothing bad happens, and the leak doesn’t come back, thats just as good information as if he blows his engine or turbo.
It’s interesting how people do not read each post, they read the first, then make a reply.
the OP already stated that is has been 7500 miles and an oil change since adding the stop leak. If you read this, then why would you have him panic and drain the oil ASAP. Doesn’t make sense.
the end of the day, the additive has been added. The better information to gather is of the on going condition of the OP’s leak, engine condition, and turbo charger condition. We can use him as a Guinea Pig for the rest of us. If nothing bad happens, and the leak doesn’t come back, thats just as good information as if he blows his engine or turbo.
I read the entire thread, always do. I don't care if its been in there 500 or 10,000 miles, the sooner the crap additives are out, the better.
The concern is for a gradual process of unwanted deposits. Just because there is no issue after 7,500 miles dosent mean there hasn't been a negative effect than can be abated by taking action. "As soon as possible" isn't a life or death immediate action, it's as soon as he/she can get around to it for the best interest of his/her vehicle.
The OP can do whatever they want and I have zero investment on whether or not the engine has any ill effects but the last thing I would want to do is not provide advice and just take a "wait and see" approach with someone else's valuable asset.
Engine oil leak, 2015 NX200t
