www.millersoils.co.uk

take a look in their motor sport and classic ranges where they list oils for LS axles. I think I will go for the CRX LS 80W90 in the motorsport range unless you think otherwise.
Do you think such oils will not require the posi additive? Its hard to find in the UK.

Thanks

Simon

88 5.7 2.77 BW axle

 

Before you do anything, read this:

https://www.thirdgen.org/techbb2/sho...threadid=72062

this:

https://www.thirdgen.org/techbb2/sho...threadid=77011

and this:

https://www.thirdgen.org/techbb2/sho...light=additive

Does Red Line have a distributorship in the UK?

By the way - I used to live in Sheffield...

 

Thanks for the reply Keith. I have read a lot of previous threads and am confused by what to do.
I bought my car with 60k on the clock and it has now done 82k. The torque converter needed replacing 2k ago and I wandered if it was due to lack of oil changes and so did not want the same to happen with the diff.
When GM said in the service bullitin not to add the additive could it be a penny pinching move for its dealers rather than on scientific evidence?
Millers seem to do a good range of oils for LS axles. Is the current view that Redline is best? What oil grade?
Also cannot get a gasket. But can easy make one and use RTV sealent also.
What is the realistic oil change interval? I'm not a white gloved, fully synthetic every 5 minute type.
I bet you dont regret moving to the US but I think I'd have chosen a warmer state.

Thanks

Simon

 

Officially, the additive is not needed. Officially, for ~$40+ USD you can buy a little refurb anti chatter kit (which includes an additive). We put the additive in EVERY TIME! Never had a problem.

Miles
www.9bolt.com

PS, we have rear cover gaskets too

 

Simon -

Basically, any GL5 (a standard devised by the SAE) gear oil is acceptable. I forget the weight and I am at work, but beyond that you are more or less free to choose. For a full spec for GL5, visit www.sae.org I guess what I am saying is that you need the proper weight (from the Owners' Manual) and GL5 compliance, and you're good to go regardless of brand name. The recommended change interval should also be in the Owners' Manual...

As far as the additive is concerned, it appears to be down to opinion since I have seen additive used and not used with no apparent difference in result. Since my posi was tired, I threw in the Red Line described in the other thread to get it to work better and to learn something... Once the posi is really dead, I'll throw on the other rear end and continue on...

As Miles says above, he has quite a bit of the 9-bolt stuff. Unfortunately, oil cannot be sent easily since it is classified as a hazardous material in the US. All of my Red Line gets delivered via ground transport as a result...

As far as being in Pittburgh - I was born and raised here. In 1995, I acceptaed a transfer to our Sheffield office. Returned in 1997. I was offered a transfer back in February and accepted. I am supposed to be there now. My wife backed out on me last minute... I am not amused.

I would LOVE to take a Third Gen through the Peak District!

 

OK so lets assume a standard GL5 80w 90 oil plus the GM additive should be added surely this is the same as an 80w 90 GL5 oil that is specifically blended for limited slip axles which usually say they have an additive added. The question is are these additives the same or similar.
I'm guessing that in the past limited slip axles were quite rare and oil companies did not make specific oil for them so GM had to come up with the additive.
I spoke to a guy from Millers oil and he said their gear oils specifically for LS axles are essentially a standard oil with an additive to cope with the higher demands on the oil. He said some of his customers use these oils in standard axles due to their higher spec.

Driving third gen cars in the UK attracts attention second only to police cars with lights flashing! Honest, sometimes when I park up there is a crowd of people looking at it when I return.

I thought you were a UK citizen who had emigrated to the US, obviously not.

Just a final question for anyone. What do 3rd gen owners think of the 4th gen cars? I dont think they look as good, they have lost the classic shape of the 2nd and 3rd gen cars and look more Japanese than US. Although when I rarely see them here I sometimes mistake the front view for a Jaguar XK8. Like so many cars I bet they are more refined, comfortable etc but have lost some of the raw driving appeal 3rd gens have.

Best wishes

Simon

 

Simon -

You assumptions about the additive mirror what I have learned. Gear Oils that claim to be for LS diffs are simply the "standard" oils with additive already in them. I have theorized that it is easier/chearer for an oil supplier to make the oil without the additive and sell the additive as an "adder". Then he doesn't have two inventories to worry about... Just my theory.

I can only imagine the reaction to one of these in the UK. Someone in my neighborhood had a second generation Camaro and I used to run to my window to watch it go by, though I had never seen it at a stop...

I'll throw in my 2p on my opinion on the 4th gens:

I race my IROC and other (better, more experienced) drivers say that the 3rd gens actually handle better even though the front/rear weight distribution isn't as even as the 4th gens (note how far back in the bay the engine sits in the 4th gen). Note than an 89 IROC won the stock Solo II nationals this year in the FS class http://www.scca.org/amateur/solo2/na...001/index.html Note that this was against 4th gens...

I personally think that the 3rd gen is much more distinctive in design (as you have observed) than the 4th gens.