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Mustang Forums
2015+ S550 Mustangs
Drivetrain Modification/Discussion
Differential chatter after switch to AMSOIL
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<blockquote data-quote="gqneon" data-source="post: 14890198" data-attributes="member: 172453"><p><a href="https://youtu.be/SIgvRUUEM20" target="_blank">https://youtu.be/SIgvRUUEM20</a></p><p></p><p>Here's a link to a video showing similar symptoms with 75W-90 AMSOIL severe gear and Ford Friction Modifier. I'm thinking it was something that happened to the differential or carrier and I just hadn't ever noticed until I started checking to make sure the new lube was going to work fine. Like was said, there's no clutches in it, it's metal, and I didn't do anything with it other than swap to lube that frankly both should have worked with. The interesting thing is my local ford dealer didn't even HAVE any 75W-85 Premium, all they had was 75-90. Guess I'm on the hunt to find that. I'm guessing that the rear end might even be under warranty at 2600 miles, I'm just wondering when whatever happened to it happened, because I don't remember it having any drivability issues. In fact it still doesn't technically, I just honed in on the noise last night. </p><p></p><p>I got under it and checked to see if anything obvious was broken or looked odd, but didn't see anything. Half shafts appear fine, solid, although they have just a hair of play side to side (I can move them maybe a mm from differential to hub side to side if I try). </p><p></p><p>Any other ideas guys? I'm guessing no one has had these issues yet, and I haven't done anything to or with this car yet that it wasn't made to do.</p></blockquote><p></p>
[QUOTE="gqneon, post: 14890198, member: 172453"] [url]https://youtu.be/SIgvRUUEM20[/url] Here's a link to a video showing similar symptoms with 75W-90 AMSOIL severe gear and Ford Friction Modifier. I'm thinking it was something that happened to the differential or carrier and I just hadn't ever noticed until I started checking to make sure the new lube was going to work fine. Like was said, there's no clutches in it, it's metal, and I didn't do anything with it other than swap to lube that frankly both should have worked with. The interesting thing is my local ford dealer didn't even HAVE any 75W-85 Premium, all they had was 75-90. Guess I'm on the hunt to find that. I'm guessing that the rear end might even be under warranty at 2600 miles, I'm just wondering when whatever happened to it happened, because I don't remember it having any drivability issues. In fact it still doesn't technically, I just honed in on the noise last night. I got under it and checked to see if anything obvious was broken or looked odd, but didn't see anything. Half shafts appear fine, solid, although they have just a hair of play side to side (I can move them maybe a mm from differential to hub side to side if I try). Any other ideas guys? I'm guessing no one has had these issues yet, and I haven't done anything to or with this car yet that it wasn't made to do. [/QUOTE]
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2015+ S550 Mustangs
Drivetrain Modification/Discussion
Differential chatter after switch to AMSOIL
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