Chainging the Fluid in my rear end...
#1
Launching!
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Chainging the Fluid in my rear end...
by reading the FAQ i saw 75W90 and 80W90... is one even marginally better than the other?
I also heard if you use synthetic you dont need the Limited slip addative?
I have a 1998 Camaro SS so i have the auburn Diff I believe
which i believe used the limited slip addative...
Installuniversity says I should use 12oz of the limited slip but everyone says 4oz?
whats the truth!
I also heard if you use synthetic you dont need the Limited slip addative?
I have a 1998 Camaro SS so i have the auburn Diff I believe
which i believe used the limited slip addative...
Installuniversity says I should use 12oz of the limited slip but everyone says 4oz?
whats the truth!
#7
Launching!
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Originally Posted by EvilCamaroSS
I also heard if you use synthetic you dont need the Limited slip addative?
Also, I think the disclaimer with using synthetic oil is that you MAY not need the LSD additive.
The Auburn Gear limited-slip differential design has been extensively tested with high quality non-synthetic 80W90 hypoid oils treated with GM or Ford friction additives (3 oz. of additive will treat 1 quart of oil). To avoid differential clutch chatter (noise) and for optimum performance, use the oil and additive described above. Use of other additive and oil types may cause differential clutch chatter.
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#9
Launching!
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Originally Posted by keliente
Stick with regular oil, syn is not necessary at all. 75w90 and 80w90 are very close...just pick one.
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Originally Posted by keliente
If you have an auburn diff, use the additive.
Stick with regular oil, syn is not necessary at all. 75w90 and 80w90 are very close...just pick one.
Stick with regular oil, syn is not necessary at all. 75w90 and 80w90 are very close...just pick one.
#12
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Originally Posted by jb442
#13
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Originally Posted by jb442
Synthetic oils may not be necessary, as a conventional oil would probably be acceptable for most people, but I would venture to say that most of the performance-oriented people on this site would opt for a better performing synthetic oil when possible, and when it fits their budget. For EvilCamaroSS (and others) here's some of those benefits: http://www.redlineoil.com/whitePaper/10.pdf.
#14
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Originally Posted by keliente
Yes but in the case of the rear end the regular does just as good of a job as the syn, so why spend the $$ when not needed? I drag race, I auto x, I daily drive, I don't use syn.
From Redline --> BENEFIT SUMMARY:
• Provides the greatest gear protection available
• Reduces differential and gearbox temperatures
• Increases differential and gearbox durability
• Rapid lubrication even in very cold weather
• Improves shifting in manual transmissions
• Provides improved drivetrain efficiency
• Prevents foaming even at high speeds
• Low corrosiveness reduces synchronizer wear
• Stable even at elevated temperatures
• Can be used in limited-slip and regular differentials
• Suitable for competition and street use
• Compatible with petroleum and other synthetics
• Compatible with seals designed for petroleum
• Satisfies requirements calling for API GL-5 and GL-6
• Allows extended drains in non-warranty vehicles
In the past, I've seen articles in HotRod Magazine, or others, where they dyno a car and then change all the fluids to synthetic... In the tests they always gain power due to reduced friction, temperature, etc. So, if you want better protection and a few extra usable HP while you're at it, switch to synthetic. If the additional cost is a problem, then stick with conventional.
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Originally Posted by keliente
If you have an auburn diff, use the additive.
Stick with regular oil, syn is not necessary at all. 75w90 and 80w90 are very close...just pick one.
Stick with regular oil, syn is not necessary at all. 75w90 and 80w90 are very close...just pick one.
#16
Not trying to take this off track, but would I be able to use synthetic 80w90 in my 96 axle? Factory states I need standard 80w90 with additive, but i'd rather go with an Amsoil synthetic....
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I'm doing a fluids change tomorrow and my preference is synthetics. I'm going with the Lucas synthetic 75w90 and going to give Lucas a call tomorrow morning and ask their recommendation on the additive. Everyone seems to have their preference and recommendations. If you are using the additive, then yes, as the owners manual states it would be 4oz.
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Originally Posted by fasttimes1
I'm doing a fluids change tomorrow and my preference is synthetics. I'm going with the Lucas synthetic 75w90 and going to give Lucas a call tomorrow morning and ask their recommendation on the additive. Everyone seems to have their preference and recommendations. If you are using the additive, then yes, as the owners manual states it would be 4oz.
#19
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Originally Posted by jb442
I think you missed my point... You're correct in saying that synthetic oils are not necessary, and that regular gear oil is adequate, but saying that is very subjective. They most definitely do not perform as well as synthetic. Most people around here are looking for more than just adequate when they're working on their cars - They're looking for the best performance possible. There are gains to be had when using synthetics and my point was that synthetic oils will outperform conventional oils in just about every category.
From Redline --> BENEFIT SUMMARY:
• Provides the greatest gear protection available
• Reduces differential and gearbox temperatures
• Increases differential and gearbox durability
• Rapid lubrication even in very cold weather
• Improves shifting in manual transmissions
• Provides improved drivetrain efficiency
• Prevents foaming even at high speeds
• Low corrosiveness reduces synchronizer wear
• Stable even at elevated temperatures
• Can be used in limited-slip and regular differentials
• Suitable for competition and street use
• Compatible with petroleum and other synthetics
• Compatible with seals designed for petroleum
• Satisfies requirements calling for API GL-5 and GL-6
• Allows extended drains in non-warranty vehicles
In the past, I've seen articles in HotRod Magazine, or others, where they dyno a car and then change all the fluids to synthetic... In the tests they always gain power due to reduced friction, temperature, etc. So, if you want better protection and a few extra usable HP while you're at it, switch to synthetic. If the additional cost is a problem, then stick with conventional.
From Redline --> BENEFIT SUMMARY:
• Provides the greatest gear protection available
• Reduces differential and gearbox temperatures
• Increases differential and gearbox durability
• Rapid lubrication even in very cold weather
• Improves shifting in manual transmissions
• Provides improved drivetrain efficiency
• Prevents foaming even at high speeds
• Low corrosiveness reduces synchronizer wear
• Stable even at elevated temperatures
• Can be used in limited-slip and regular differentials
• Suitable for competition and street use
• Compatible with petroleum and other synthetics
• Compatible with seals designed for petroleum
• Satisfies requirements calling for API GL-5 and GL-6
• Allows extended drains in non-warranty vehicles
In the past, I've seen articles in HotRod Magazine, or others, where they dyno a car and then change all the fluids to synthetic... In the tests they always gain power due to reduced friction, temperature, etc. So, if you want better protection and a few extra usable HP while you're at it, switch to synthetic. If the additional cost is a problem, then stick with conventional.
Furthermore, about the dyno...I dislike statements about one rear end oil causing less friction and thus creating more hp. I don't know how much time you spend around a dyno but I'm on them what seems like daily. You can lose and gain 2-3hp on back to back runs making zero changes...that's just the way the car/dyno etc fluctuates.