Oil Catch Can
Instructor
Joined: May 2015
Posts: 780
Likes: 120
From: MA
They probably knew it did but since that engine is intentionally nerfed they probably just figured that the user would never notice the drop in power, I mean it is already kind of in slug land anyways, compared to its peers. (The V6 camry I just retired last year smokes an IS250, lol).
Then again every time I think about the nerfed IS250 motor (4GR-FSE) the first thing that comes into my head is
"BUT Y THO?"
It just never made any sense. My only guess was that they did this so they could sell more cars to some demographic that was concerned more about how the car looked than how it drove. About the only logical explanation is that they were targeting this weird segment of drivers with that idea.
-Mike
Then again every time I think about the nerfed IS250 motor (4GR-FSE) the first thing that comes into my head is
"BUT Y THO?"
It just never made any sense. My only guess was that they did this so they could sell more cars to some demographic that was concerned more about how the car looked than how it drove. About the only logical explanation is that they were targeting this weird segment of drivers with that idea.
-Mike
Last edited by drgrant; Aug 4, 2018 at 11:03 AM.
Lexus Champion
Joined: Nov 2014
Posts: 13,614
Likes: 2,921
From: Texas
They probably knew it did but since that engine is intentionally nerfed they probably just figured that the user would never notice the drop in power, I mean it is already kind of in slug land anyways, compared to
its peers.
Then again every time I think about the nerfed IS250 motor (4GR-FSE) the first thing that comes into my head is
"BUT Y THO?"
It just never made any sense. My only guess was that they did this so they could sell more cars to some demographic that was concerned more about how the car looked than how it drove. About the only
logical explanation is that they were targeting this weird segment of drivers with that idea.
-Mike
its peers.
Then again every time I think about the nerfed IS250 motor (4GR-FSE) the first thing that comes into my head is
"BUT Y THO?"
It just never made any sense. My only guess was that they did this so they could sell more cars to some demographic that was concerned more about how the car looked than how it drove. About the only
logical explanation is that they were targeting this weird segment of drivers with that idea.
-Mike
Thread Starter
Pole Position
Joined: Apr 2018
Posts: 327
Likes: 100
From: Arizona
My point exactly. My '07 IS had absolutely terrible carbon build up that the 9 year extended engine warranty wouldn't cover. Coming to stop lights the car shook like crazy and just about every time I started the car it sounded like it was going to blow up. I know it was pretty specific to the 250 engine but was just curious.
Lexus Champion
Joined: Nov 2014
Posts: 13,614
Likes: 2,921
From: Texas
My point exactly. My '07 IS had absolutely terrible carbon build up that the 9 year extended engine warranty wouldn't cover. Coming to stop lights the car shook like crazy and just about every time I started the car it sounded like it was going to blow up. I know it was pretty specific to the 250 engine but was just curious.
Thread Starter
Pole Position
Joined: Apr 2018
Posts: 327
Likes: 100
From: Arizona
Dealer just kept saying the issue didn't rise to level of needing repair because it didn't trigger the check engine light. I had a service adviser tell me I should go get a bad alternator out of a junk yard or something like that just to trip the check engine light and then they would be able to get it passed by Lexus. I wasn't planning on keeping the car much longer so I didn't want to go through that whole process.
Pit Crew
Joined: Jul 2021
Posts: 180
Likes: 12
The IS250 engine is direct injection only and prone to carbon buildup. Oil catch can may not completely mitigate the problem, but should at least delay carbon buildup problems by reducing oil blow by. It's not necessary for the GS because we have dual injection which keeps the valves cleaner.
Lexus Champion
Joined: Nov 2013
Posts: 13,282
Likes: 1,890
From: WA
The 2008 GS350 used the 2GR-FSE, which used the dual port/direct injected system.
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Lexus Test Driver
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Personally I wouldn't do an oil catch can on a street car. The whole point of a Lexus is white-glove driving. No messing with the engine.
As far as dual injection (port/direct) not having carbon issues, I think that just mitigates, but doesn't eliminate the risk. Delays the inevitable. I know there were posts of early Lexus turbo 4s having some carbon issues. check nx forum
As far as dual injection (port/direct) not having carbon issues, I think that just mitigates, but doesn't eliminate the risk. Delays the inevitable. I know there were posts of early Lexus turbo 4s having some carbon issues. check nx forum
Pit Crew
Joined: Jul 2021
Posts: 180
Likes: 12
Personally I wouldn't do an oil catch can on a street car. The whole point of a Lexus is white-glove driving. No messing with the engine.
As far as dual injection (port/direct) not having carbon issues, I think that just mitigates, but doesn't eliminate the risk. Delays the inevitable. I know there were posts of early Lexus turbo 4s having some carbon issues. check nx forum
As far as dual injection (port/direct) not having carbon issues, I think that just mitigates, but doesn't eliminate the risk. Delays the inevitable. I know there were posts of early Lexus turbo 4s having some carbon issues. check nx forum
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