Which kind amsoil should I use for my diff?
11-07-2009, 03:07 AM
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Which kind amsoil should I use for my diff?
So I go to my local Store and they had about 3 different bottles.long story short after 10minutes trying to decide I ended up walking out with the Severe gear 75w-90 was that the right choice?
11-07-2009, 10:22 AM
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the owners manual states that an SAE 90 Viscosity hypoid gear oil, API service classified GL5 or GL6 only, in the differential.
i use a 75-90 weight oil here in the northeast, i believe the northern states and canada like to use this weighted oil but i'm sure you can be fine with a 80-90 or straight 90 weighted oil. The first figure is more important to determine how the oil behaves when cold, so in cold weather on cold starts a 75-90 oil will be lighter than a straight 90.
correction: it's not the most important figure the 90 is the more important number....sorry.
i use a 75-90 weight oil here in the northeast, i believe the northern states and canada like to use this weighted oil but i'm sure you can be fine with a 80-90 or straight 90 weighted oil. The first figure is more important to determine how the oil behaves when cold, so in cold weather on cold starts a 75-90 oil will be lighter than a straight 90.
correction: it's not the most important figure the 90 is the more important number....sorry.
11-07-2009, 11:55 AM
#5
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Originally Posted by Lttakas,Nov 7 2009, 04:38 PM
Um they don't list any of theyr oils as lightweight non shock could someone show me a picture of the bottle?
i have never used amsoil gear oil, but check the FAQ there is alot of info already out there.
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11-08-2009, 08:40 AM
#10
I just put in the Amsoil 75w-110 Sever Gear oil, I highly recommend this viscosity. It is smack dab in the middle and higher end of the SAE 90 Viscosity range in hot temps (which Honda recommends) yet it has superior cold flow properties over an actual SAE90, which gets the diff. lubricated faster in cold weather. A perfect match for our diff. My car had Redline 75w-90 in it when I got the car, many of the 75w-90 fluids out there are on the lower end of the SAE90 viscosity range in hot temps. I'd prefer to be in the middle to upper range of the SAE90 spec as my personal preference. A lot of the numbers are confusing, but when you look at actual viscosity numbers and compare them to an SAE90 spec range it makes it easier to choose a fluid type. Here is a great link to viscosity charts:
http://www.bobistheoilguy.com/index.php?op...id=48&Itemid=55
The SAE90 hot temp spec range is approx. 14 to 24 Cst 100degree Kinematic range viscosity. Amsoil 75w-100 Severe Gear gives you a 100 degree Cst Kinematic viscosity of 20.4. Many 75-90 fluids are in the 16 kinematic cst 100 degree temp range, which is the lower part of the spec range. Keep in mind at hotter temps the difference is even more important.
Check out the SAE90 gear oil spec range in the link above. Then get the viscosity info from your favourite fluid manufacturer's website. Compare them to the chart to see if it is going work for you or not. The Amsoil 75w-110 Sever Gear oil fits the spec perfectly IMO, I won't use anything else as we need good cold weather flow combined with good hot weather viscosity protection and this provides is spot on.
http://www.bobistheoilguy.com/index.php?op...id=48&Itemid=55
The SAE90 hot temp spec range is approx. 14 to 24 Cst 100degree Kinematic range viscosity. Amsoil 75w-100 Severe Gear gives you a 100 degree Cst Kinematic viscosity of 20.4. Many 75-90 fluids are in the 16 kinematic cst 100 degree temp range, which is the lower part of the spec range. Keep in mind at hotter temps the difference is even more important.
Check out the SAE90 gear oil spec range in the link above. Then get the viscosity info from your favourite fluid manufacturer's website. Compare them to the chart to see if it is going work for you or not. The Amsoil 75w-110 Sever Gear oil fits the spec perfectly IMO, I won't use anything else as we need good cold weather flow combined with good hot weather viscosity protection and this provides is spot on.