# Sludge in a infinity 2008 infinity EX 35

**URL:** <https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061>\
**Category:** Maintenance/Repairs\
**Created:** [February 8, 2011, 4:25pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061 "2011-02-08T16:25:03Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![swimmer11](https://avatars.discourse-cdn.com/v4/letter/s/6bbea6/32.png) [@swimmer11](https://community.cartalk.com/u/swimmer11)\
**Post date:** [February 8, 2011, 4:25pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061/1 "2011-02-08T16:25:03Z")

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Hi ,  
  
 I have a sludge problem with this a 2008 infinity EX 35 .  
  
 The car was initially stalling and had been in service at the dealership several times .  
  
 Error codes were present and they didnt know what the cause was . They replace spark plugs and tried to find a bandaid rather find the cause ,  
  
 Now they are claimimg they cant do anything for the sludge issue and blaming it on poor maintenance … the oil was changed ever 3000 . they have the records of this also .  
  
 They talked about flushing the engine , but stated it doesnt work  
  
 Is this vehicle prone to sludge . Its onlyonly running on 5 cylinders instead of 6 per dealer . .Does everyone have any  
  
 suggestions or solutions ?  
  
 woul;d appreciate it .  
  
 Thanks

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**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\
**Post date:** [February 8, 2011, 4:56pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061/2 "2011-02-08T16:56:00Z")

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Does this engine _require_ synthetic oil and if so did you use it exclusively?

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**Author:** ![Bladecutter](https://avatars.discourse-cdn.com/v4/letter/b/aeb1de/32.png) [@Bladecutter](https://community.cartalk.com/u/Bladecutter)\
**Post date:** [February 8, 2011, 5:01pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061/3 "2011-02-08T17:01:10Z")

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Only the Nissan GT-R requires synthetic oil (0W-40 or 5W-40) in the entire Nissan/Infiniti lineup.

In fact, every single engine in every single vehicle with that one exception calls for 5W-30 oil. That includes their trucks, suv’s, and small cars. Every single one of them.

BC.

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**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [February 8, 2011, 5:20pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061/4 "2011-02-08T17:20:15Z")

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I Wonder What Prompted Nissan (?) ( Is That Who Makes Infinity ?) To Start Recommending “Nissan Ester Oil” engine oil in some of their 2008 - 2009 engines ?

CSA

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**Author:** ![Bladecutter](https://avatars.discourse-cdn.com/v4/letter/b/aeb1de/32.png) [@Bladecutter](https://community.cartalk.com/u/Bladecutter)\
**Post date:** [February 8, 2011, 5:35pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061/5 "2011-02-08T17:35:42Z")

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We should probably only reply to one of these two threads.  
This is annoying.

BC.

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**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\
**Post date:** [February 8, 2011, 5:40pm UTC](https://community.cartalk.com/t/sludge-in-a-infinity-2008-infinity-ex-35/61061/6 "2011-02-08T17:40:57Z")

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Even the Leaf? 🙂