88 Differential Lube Change
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
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88 Differential Lube Change
greetings,
i have an 88 vette...i was looking at a picture of a 92 vette on another forum site and it showed what appeared to be the fill plug on the differential as being "inboard" (being on the side facing the transmission)....
....when looking at my 88's, i noticed a fill plug as being on the "outboard" side (side facing the rear bumber cover) and which was almost inaccessible....
...is this fill plug location the same on the 88 as it is on the 92?...or am i looking at something totally different?....is teh 88's inboard or outboard?......thanks again!
i have an 88 vette...i was looking at a picture of a 92 vette on another forum site and it showed what appeared to be the fill plug on the differential as being "inboard" (being on the side facing the transmission)....
....when looking at my 88's, i noticed a fill plug as being on the "outboard" side (side facing the rear bumber cover) and which was almost inaccessible....
...is this fill plug location the same on the 88 as it is on the 92?...or am i looking at something totally different?....is teh 88's inboard or outboard?......thanks again!
Race Director
Joined: Jun 2004
Posts: 13,963
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From: WI
I can confirm the drain/fill plug on my '88 is on the passenger side of the diff. I am not sure about the '92. It is a large threaded plug with a large round end with a hex inset. It may still have a red plastic tag hanging from it. On my car I use a pipe wrench on the plug. I think I remembered to pick up the hex size for it now though. There is some room.
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
....thanks for the reply...that is where i was and saw a pict of a 92..i am not interested in the 92 at all other then if the placement of the fill plug is in the same place......i have done a "oil" change of a gearbox before (on my 81) and am familiar with it...however, as i said before, i can see a fill plug on the passenger OUTBOARD side of my 88's differential but, accessibility is the problem!...the pict of the 92 threw me as the article said teh 92 was located on teh INBOARD side..
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
I can confirm the drain/fill plug on my '88 is on the passenger side of the diff. I am not sure about the '92. It is a large threaded plug with a large round end with a hex inset. It may still have a red plastic tag hanging from it. On my car I use a pipe wrench on the plug. I think I remembered to pick up the hex size for it now though. There is some room.
Race Director
Joined: Jun 2004
Posts: 13,963
Likes: 709
From: WI
No I did not remove anything, there is enough space to R&R the plug and place a hose in there to pump lube in.
Sorry, by outboard I think you mean on the side by the passenger tire. The opening/plug points toward the pass tire.
Sorry, by outboard I think you mean on the side by the passenger tire. The opening/plug points toward the pass tire.
Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
common mistake (inboard/outboard) so that is why i clarified my description in my initial post..however, is the plug on the "transmission" side of the differential or the "rear bumper cover" side of the diferential?.. ...i read in a post that there is a mity-vac pump for doing this.....are you aware of any chain stores (autozone, advance auto parts, pep boys) that sell the pump?.....thanks again!
Race Director
Joined: Jun 2004
Posts: 13,963
Likes: 709
From: WI
... common mistake (inboard/outboard) so that is why i clarified my description in my initial post..however, is the plug on the "transmission" side of the differential or the "rear bumper cover" side of the diferential?..
...i read in a post that there is a mity-vac pump for doing this.....are you aware of any chain stores (autozone, advance auto parts, pep boys) that sell the pump?.....thanks again!
common mistake (inboard/outboard) so that is why i clarified my description in my initial post..however, is the plug on the "transmission" side of the differential or the "rear bumper cover" side of the diferential?.. ...i read in a post that there is a mity-vac pump for doing this.....are you aware of any chain stores (autozone, advance auto parts, pep boys) that sell the pump?.....thanks again!
You can use a bunch of different ways to change the lube. Auto parts places should have pumps. I use a hand pump, I run some WD through it after I pump the old lube out, to clean it before pumping the new lube in. I shop at Fleet Farm, the stores you listed are further away so I do not go to them very often.
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Thread Starter
Safety Car
Joined: Jul 2004
Posts: 3,845
Likes: 30
........found the hand pump i was looking for ($13.00) and did the job today......the filler plug was where you said it was...i have no idea as to what i was thinking about when i said it was very high up and located on the back of the gearbox...at any rate, VERY simple job...stoked it with 8 oz of the additive as well as 85-140 oil.......DONE..and thanks.....
