Servicing a '02 Ranger 8.8 differential

[ptf18]

Fellows. Finished changing the pinion seal in my '02 Ranger with a 8.8 rear end. Non- Limited Slip.
I filled the differential with fluid till it was even with the bottom of the fill hole.

THEN....... I read the filling instructions in my '02 Ranger Owners Manual.

It states that the level is to be... 1/4" to 9/16" ..... BELOW.... the bottom of the fill hole.

Never heard of this.

Would appreciate your input.

I sucked out the fluid till it was 1/4" BELOW the bottom of the fill hole........

Took out a bit over ONE quart.

Seems really odd to me.

Thanks.

 

[Ninjakiwi8]

Fellows. Finished changing the pinion seal in my '02 Ranger with a 8.8 rear end. Non- Limited Slip.
I filled the differential with fluid till it was even with the bottom of the fill hole.

THEN....... I read the filling instructions in my '02 Ranger Owners Manual.

It states that the level is to be... 1/4" to 9/16" ..... BELOW.... the bottom of the fill hole.

Never heard of this.

Would appreciate your input.

I sucked out the fluid till it was 1/4" BELOW the bottom of the fill hole........

Took out a bit over ONE quart.

Seems really odd to me.

Thanks.

Hello there, I have an 8.8 off a 99 explorer and did a full rear end rebuild with a detroit tru trac lsd. at the time id probably taken the diff apart a total of 5 times within the year and half after that build haha due to first time installer slip ups (nothing serious) but I never ran into a problem running the gear oil at the level of filler plug. in fact I normally just wait until seaps out then cap it. No problems related to that what so ever.

 

[Mbrooks420]

People often overfil the 8.8, it really shouldn’t be an issue.

 

[ptf18]

I've "topped" the level back to the bottom of the plug hole. Took the 1 quart I had removed. Seems "everyone" fills the rear end to the bottom of the hole so I suppose its OK.
Odd that the Owners Manual says differently.