Diff Fluid change
#1
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So I'm going to change the diff fluid for my 2003 xj sport, the fluid i'm using is:
Castrol Syntrax Limited Slip 75W-90 Synthetic Gear Oil
I'm pretty sure my car isn't an LSD car, but I did the research and I couldn't find a really definitive answer nor could any of my friends.
Does anyone have an objection to that?
Castrol Syntrax Limited Slip 75W-90 Synthetic Gear Oil
I'm pretty sure my car isn't an LSD car, but I did the research and I couldn't find a really definitive answer nor could any of my friends.
Does anyone have an objection to that?
#2
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This topic has been addressed on the XJ6 forum and the consensus is that you have nothing to worry about. While I don't recall if the Castrol Syntax was specifically mentioned, the use of synthetic and limited slip were considered. The use of ordinary lube in a limited slip diff. is definitely a bad idea.
#3
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Okay cool thanks - I got the castrol cause I read that forum - I should have been more specific:
In my non-jag experience - you can use limited slip diff oil in a non lsd car, but not the other way around. Since I'm not sure if mines an LSD, and I can't figure it out (though i know the majority aren't) I got the LSD fluid... is the "limited slip fluid" thing a problem if it isn't LSD?
In my non-jag experience - you can use limited slip diff oil in a non lsd car, but not the other way around. Since I'm not sure if mines an LSD, and I can't figure it out (though i know the majority aren't) I got the LSD fluid... is the "limited slip fluid" thing a problem if it isn't LSD?
#4
#6
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Just finished changing the diff fluid, here's a picture of the fluid I pulled out of it with 68k miles:
![](http://s287.beta.photobucket.com/user/MikeLss1/media/2012-11-04171342.jpg.html)
It's not the worst I've ever seen but I'm glad I changed it.
I'll let ya'll know if I have any problems running the castrol... which i really hope i won't have to do!
Thanks for the help!
here's the link if the pic didn't post, it didn't show up in my box:
http://i287.photobucket.com/albums/l...1-04171342.jpg
![](http://s287.beta.photobucket.com/user/MikeLss1/media/2012-11-04171342.jpg.html)
It's not the worst I've ever seen but I'm glad I changed it.
I'll let ya'll know if I have any problems running the castrol... which i really hope i won't have to do!
Thanks for the help!
here's the link if the pic didn't post, it didn't show up in my box:
http://i287.photobucket.com/albums/l...1-04171342.jpg
#7
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Red Line has stopped labeling their Diff. Gear Oil (LS) Limited slip, and (NS) Non-lilmited slip. Reading their website, virtually identical descriptions are found for 75W-90 (Jag '97-2003 Spec), NEW 75W-110 and 75W-140 products. What they present is "no additional additive required" for limited slip diff. SO, the questions are: Is current Red Line product line suitable for BOTH, NS and LS diffs? And some additive is needed for "some" LSD applications? '97 to '03 is NON-limited slip, so the question is far from academic. In Southern climes (I live in Aiken, SC), where ambient temps are 90 to 100 deg. F. for maybe 2 or 3 months, we read about many XJR owners going to 75W-140 diff. lube. Again, without any apparent "cautions." I have chosen a "mid-point" NEW Red Line product, 75W-110, of which 2 qts rest in their delivery box on the floor next to me. Label reads, in part, "GL-5 High-Performance Lubricant for LIMITED-SLIP DIFFERENTIALS" In absence of a conversation with Red Line, anyone have DEFINITIVE info on application/use for NON-LSD XJR (308)???
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#8
![Default](/forum/images/icons/icon1.gif)
Red Line has stopped labeling their Diff. Gear Oil (LS) Limited slip, and (NS) Non-lilmited slip. Reading their website, virtually identical descriptions are found for 75W-90 (Jag '97-2003 Spec), NEW 75W-110 and 75W-140 products. What they present is "no additional additive required" for limited slip diff. SO, the questions are: Is current Red Line product line suitable for BOTH, NS and LS diffs? And some additive is needed for "some" LSD applications? '97 to '03 is NON-limited slip, so the question is far from academic. In Southern climes (I live in Aiken, SC), where ambient temps are 90 to 100 deg. F. for maybe 2 or 3 months, we read about many XJR owners going to 75W-140 diff. lube. Again, without any apparent "cautions." I have chosen a "mid-point" NEW Red Line product, 75W-110, of which 2 qts rest in their delivery box on the floor next to me. Label reads, in part, "GL-5 High-Performance Lubricant for LIMITED-SLIP DIFFERENTIALS" In absence of a conversation with Red Line, anyone have DEFINITIVE info on application/use for NON-LSD XJR (308)???
#9
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I have valvoline syth. 75w-140 in mine and the sky hasn't fallen yet. Have been running non spec fluid in my 85 TVR with a jag rear for years as the fluid for that isn't available. If you're concerned why not just order the jag stuff. You can get it for $80 for 2 liters which isn't a ton more than redline is if you think about it. It isn't like you need to do it every year.
In my XKR and XJR I'm running the following fluids:
-Mobil 1 5W40 High Mileage Synthetic ($40-50 per change assuming retail)
-Valvoline Synthetic ATF VV322 ($50 per change assuming retail)
-Valvoline Synpower Brake Fluid ($20 per change)
-GM Supercharger Oil ($16 per change)
-Castrol Syntec Dexron III ATF for PS (new bottles from Corvette I had left over) [$10ish?]
-Pentosin CHF11S for top (idk $60? for the change I did replacing a ram)
I'm not paying $80 for two quarts of gear oil. I can get 2 quarts of the Valvoline for $26 OTD and it's an excellent product.
#10
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