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Guidance for Oil Leak '98 LS400 #5414441 04/27/20 09:49 AM
Joined: Sep 2002
Posts: 4,662
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Gebo Offline OP
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Just got my valve covers replaced on my '98 LS400 and all was well until a test drive and found an oil leak near the oil filter. Mechanic said it was an oil cooler hose that went to what he called
the "sandwich." He noticed smoke coming from under the hood after the test drive. He said he had to add 1 qt of oil.

I asked him about what happened and he said it looked like the hose had slipped partially off. He trimmed 1/4 inch off the end of the hose and used a different clamp to hold it on.

I have the car up on some ramps getting ready to do some looking around. If someone replaced the valve covers, is there a reason to be near the oil cooler line right above the oil
filter? I may not be fully understanding the scenario. Should I find this hose and replace it?


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Guidance for Oil Leak '98 LS400 [Re: Gebo] #5414451 04/27/20 09:57 AM
Joined: Jan 2004
Posts: 2,881
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Barkleymut Offline
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Posts: 2,881
310k on the original hose that has already failed and been repaired, absolutely time to replace it.


09 Vue 2.4L 4spd AT/ 09 Flex 3.5L / 96 F150 5.0 5speed / 07 Mustang GT auto
Re: Guidance for Oil Leak '98 LS400 [Re: Gebo] #5414452 04/27/20 09:59 AM
Joined: Sep 2007
Posts: 1,490
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JMJNet Offline
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Did you search at the Lexus forums?


  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: Guidance for Oil Leak '98 LS400 [Re: JMJNet] #5414458 04/27/20 10:01 AM
Joined: Sep 2002
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Gebo Offline OP
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Originally Posted by JMJNet
Did you search at the Lexus forums?



No yet. They "suck" compared to you guys. thumbsup


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Guidance for Oil Leak '98 LS400 [Re: Barkleymut] #5414459 04/27/20 10:02 AM
Joined: Sep 2002
Posts: 4,662
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Gebo Offline OP
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Originally Posted by Barkleymut
310k on the original hose that has already failed and been repaired, absolutely time to replace it.



Now I gotta find the darn thing.


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Guidance for Oil Leak '98 LS400 [Re: Gebo] #5414469 04/27/20 10:07 AM
Joined: Apr 2017
Posts: 3,648
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hallstevenson Offline
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Originally Posted by Gebo
If someone replaced the valve covers, is there a reason to be near the oil cooler line right above the oil filter?

Are you insinuating that he scammed you for add'l repair work ? 300k miles and you're questioning a hose failure.... ???

Re: Guidance for Oil Leak '98 LS400 [Re: Gebo] #5414475 04/27/20 10:10 AM
Joined: Jan 2004
Posts: 2,881
B
Barkleymut Offline
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Posts: 2,881
ha, good luck. Those mirrors on a stick are a God send for these types of projects.


09 Vue 2.4L 4spd AT/ 09 Flex 3.5L / 96 F150 5.0 5speed / 07 Mustang GT auto
Re: Guidance for Oil Leak '98 LS400 [Re: Gebo] #5414484 04/27/20 10:20 AM
Joined: Sep 2007
Posts: 1,490
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JMJNet Offline
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Posts: 1,490
Originally Posted by Gebo
Originally Posted by JMJNet
Did you search at the Lexus forums?



No yet. They "suck" compared to you guys. thumbsup


Thanks but they probably have this on their FAQ already.

Yes, at that mileage, I will change just about all the rubber parts or metal crimped rubber parts.


  • 2017 Toyota Sienna
  • 1995 GMC Suburban 6.5L Turbo Diesel


Re: Guidance for Oil Leak '98 LS400 [Re: hallstevenson] #5414486 04/27/20 10:20 AM
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Gebo Offline OP
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Originally Posted by hallstevenson
Originally Posted by Gebo
If someone replaced the valve covers, is there a reason to be near the oil cooler line right above the oil filter?

Are you insinuating that he scammed you for add'l repair work ? 300k miles and you're questioning a hose failure.... ???



C'mon, hallstevenson. Don't play a mind reader. LOL

I am wondering if in the process of replacing the valve covers he could have moved the hose on accident. He only charged me $85 to fix my door hinge,
replace the valve covers and clean my headlights. One time he lied to me and I caught him and he apologized. He has never scammed me that I am
aware of. grin


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: Guidance for Oil Leak '98 LS400 [Re: Barkleymut] #5414489 04/27/20 10:21 AM
Joined: Sep 2002
Posts: 4,662
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Gebo Offline OP
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Joined: Sep 2002
Posts: 4,662
Originally Posted by Barkleymut
ha, good luck. Those mirrors on a stick are a God send for these types of projects.



LOL. Thanks for the reminder.


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
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