Dan.Mtl

Transmission Oil In Rx350

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I have 2010 RX350 and I noticed that tere is no transmission oil level stick to be found in the engine compartment.

I asked the "tech. advisor" at the dealership and he told me the transmission is sealed and there is no need for oil to be added for the life of the car...

I find that to be not a very logical answer.

Does anybody here know if there is a more logical answer to this question?

Thanks for your help.

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I have 2010 RX350 and I noticed that tere is no transmission oil level stick to be found in the engine compartment.

I asked the "tech. advisor" at the dealership and he told me the transmission is sealed and there is no need for oil to be added for the life of the car...

I find that to be not a very logical answer.

Does anybody here know if there is a more logical answer to this question?

Thanks for your help.

My BMW X5 is the same...supposed to be lifetime fluid? They have now started reccomending it be changed I think at 100k miles. They drop the pan and fill from under the car. I assume it would be the same on the new Lexus?

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I have 2010 RX350 and I noticed that tere is no transmission oil level stick to be found in the engine compartment.

I asked the "tech. advisor" at the dealership and he told me the transmission is sealed and there is no need for oil to be added for the life of the car...

I find that to be not a very logical answer.

Does anybody here know if there is a more logical answer to this question?

Thanks for your help.

I wrote Lexus Canada and the aswer was: the car equiped with a WS type transmission fluid that doesn't need to be changed, but the dealer has ways of checking the fluid level during maintenence work.

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On 7/19/2010 at 11:40 AM, Dan.Mtl said:

I have 2010 RX350 and I noticed that tere is no transmission oil level stick to be found in the engine compartment.

I asked the "tech. advisor" at the dealership and he told me the transmission is sealed and there is no need for oil to be added for the life of the car...

I find that to be not a very logical answer.

Does anybody here know if there is a more logical answer to this question?

Thanks for your help.

The tech is correct sort of. The transmission is filled with transmission fluid that would last about 150k or so before completely breaking down therefore many original owners would sell the RX350 before any major issue occur in theory hence the lifetime claim. However, the fluid should be changed before 100k miles to prevent the start of transmission failure for vehicles running more than 100k miles. The transmission also has a filter that needs changing as well after 100k miles.

So if you are going to trade the RX350 in at 100k miles or soon after then the fluid is lifetime and no change is necessary. However, If you buying a used high mileage RX350 with 60k miles or more; or keeping your current RX350 well past 150k miles then I would change the fluid ever 60k miles and the filter at 120k miles to reduce the change of a transmission failure.

The transmission has a drain plug,level plug and a fill plug or just a drain plug with level tube and fill plug. However, the level is determined by a level tube located over the level plug that only allow certain amount of fluid to drain out based on fluid temperature expansion.

 

The video shows how to it works on a seal transmission without dipstick. Similar to the RX350.

 

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I'm new here, but I just purchased a 2015 RX that just had the 60k service done.  It included a trans  flush and fill.  Evidently it's now part of the 60k service.  Sounds reasonable to me.

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