Service intervals Transfer Case & Differentials
07-08-14, 06:01 AM
#2
Lexus Test Driver
Whenever I remember. No, but seriously around 50k miles.
But this time around I used Royal Purple and after seeing some studies on gear oil, I want to get that stuff out of there. So I'm thinking a 30k-35k run this time, will change it out next summer (currently have 21k on the gear oil). No time left to do it this summer.
But this time around I used Royal Purple and after seeing some studies on gear oil, I want to get that stuff out of there. So I'm thinking a 30k-35k run this time, will change it out next summer (currently have 21k on the gear oil). No time left to do it this summer.
07-08-14, 06:07 AM
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Whenever I remember. No, but seriously around 50k miles.
But this time around I used Royal Purple and after seeing some studies on gear oil, I want to get that stuff out of there. So I'm thinking a 30k-35k run this time, will change it out next summer (currently have 21k on the gear oil). No time left to do it this summer.
But this time around I used Royal Purple and after seeing some studies on gear oil, I want to get that stuff out of there. So I'm thinking a 30k-35k run this time, will change it out next summer (currently have 21k on the gear oil). No time left to do it this summer.
07-08-14, 10:11 PM
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What "red flags"??? I've been using RP for the last 25,000 miles and don't see any problem with it. But of course I haven't taken apart the rear diff or transfer case and looked at it under a microscope either. So please explain. And obviously all our RX's are over 10 years old already...so how much does it REALLY matter any way? Just askin.
07-09-14, 05:05 AM
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What "red flags"??? I've been using RP for the last 25,000 miles and don't see any problem with it. But of course I haven't taken apart the rear diff or transfer case and looked at it under a microscope either. So please explain. And obviously all our RX's are over 10 years old already...so how much does it REALLY matter any way? Just askin.
One report on the subject can be viewed here Does this mean your differential or transfer case are going to implode, I don't think so, but perhaps it may impact a decision on how long you leave that lube in your car.
Last edited by pilot2; 07-09-14 at 05:14 AM.
07-09-14, 08:28 PM
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Apparently testing was done on the various gear lubes and Royal Purple's test results were marginal regarding it holding its viscosity, etc. One report on the subject can be viewed here Does this mean your differential or transfer case are going to implode, I don't think so, but perhaps it may impact a decision on how long you leave that lube in your car.
One report on the subject can be viewed here Does this mean your differential or transfer case are going to implode, I don't think so, but perhaps it may impact a decision on how long you leave that lube in your car.
07-09-14, 08:35 PM
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Apparently testing was done on the various gear lubes and Royal Purple's test results were marginal regarding it holding its viscosity, etc. One report on the subject can be viewed here Does this mean your differential or transfer case are going to implode, I don't think so, but perhaps it may impact a decision on how long you leave that lube in your car.
One report on the subject can be viewed here Does this mean your differential or transfer case are going to implode, I don't think so, but perhaps it may impact a decision on how long you leave that lube in your car.P.S. The only thing I would add tho is that that test appears to be from 2007. I would imagine RP has vastly improved their product in the last 7 years...at least I would hope so.
Last edited by BertNelson; 07-09-14 at 09:16 PM.
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