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75w90 vs 80 #4610330
12/21/17 02:45 PM
12/21/17 02:45 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline OP
Kev994  Offline OP
Joined: Aug 2016
Posts: 19
North Carolina
I have always thought 75w90 was suitable where 80 weight gear oil was called for so Iíve been a bit confused as to why Amsoil doesnít recommend severe gear for my 2011 Outlander V6 AWD on their product recommender. I finally decided to ask what was up, here is the response I got from tech support :
Both the differential and transfer case call for SAE80, GL-5 gear lube. At this time we do not offer a GL-5 that is as light as SAE80

I was under the impression that Iíd take a minuscule mpg hit but that itís otherwise suitable, am I missing something?

Last edited by Kev994; 12/21/17 02:47 PM.
Re: 75w90 vs 80 [Re: Kev994] #4610377
12/21/17 03:48 PM
12/21/17 03:48 PM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline
Joined: Jul 2017
Posts: 542
Texas (south)
my car calls for a 75w80 in its tranny. I feel it is good enough.


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: 75w90 vs 80 [Re: Kev994] #4610393
12/21/17 04:06 PM
12/21/17 04:06 PM
Joined: Apr 2004
Posts: 763
Herndon, VA
btanchors Offline
btanchors  Offline
Joined: Apr 2004
Posts: 763
Herndon, VA
My Tundras and Tacoma specify a 75W-85 for the differentials, yet Amsoil recommends their 75W-90 for those applications.

Re: 75w90 vs 80 [Re: Kev994] #4610497
12/21/17 06:17 PM
12/21/17 06:17 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline OP
Kev994  Offline OP
Joined: Aug 2016
Posts: 19
North Carolina
I told the configurator that my car is a 2010 and it says all of the gear fluids are good, which is weird, itís the same car with the same fluid requirements.

Re: 75w90 vs 80 [Re: Kev994] #4610576
12/21/17 07:38 PM
12/21/17 07:38 PM
Joined: Jan 2017
Posts: 368
NJ
JLawrence08648 Offline
JLawrence08648  Offline
Joined: Jan 2017
Posts: 368
NJ
I use 75w90 but because of the thickness and especially in the cold weather, I use only synthetic.

Re: 75w90 vs 80 [Re: JLawrence08648] #4610602
12/21/17 07:58 PM
12/21/17 07:58 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline OP
Kev994  Offline OP
Joined: Aug 2016
Posts: 19
North Carolina
Originally Posted By: JLawrence08648
I use 75w90 but because of the thickness and especially in the cold weather, I use only synthetic.

Yeah, Iím moving back to Winnipeg so the 75w is what interests me, I noticed the Outlander is very sluggish to start with the 80 weight when itís below -30C

Re: 75w90 vs 80 [Re: btanchors] #4610605
12/21/17 08:02 PM
12/21/17 08:02 PM
Joined: Feb 2014
Posts: 2,458
[email protected] CZ firearm factory
Marco620 Offline
Marco620  Offline
Joined: Feb 2014
Posts: 2,458
[email protected] CZ firearm factory
Think Redline makes a 75/80 85 wt.


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Re: 75w90 vs 80 [Re: Kev994] #4610623
12/21/17 08:18 PM
12/21/17 08:18 PM
Joined: Sep 2015
Posts: 2,478
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,478
Malaysia
Originally Posted By: Kev994
I have always thought 75w90 was suitable where 80 weight gear oil was called for so Iíve been a bit confused as to why Amsoil ............

I'd similar thought as you.
75W90 would be fine, albeit with VII's.

Re: 75w90 vs 80 [Re: Kev994] #4610690
12/21/17 09:46 PM
12/21/17 09:46 PM
Joined: Aug 2004
Posts: 4,821
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,821
Katy, Republic of Texas
Originally Posted By: Kev994
I have always thought 75w90 was suitable where 80 weight gear oil was called for ...


Same here, and is what I have in the rear of my bike (calls for SAE 80 Hypoid gear oil, am using some Supertech 75w-90).

Maybe since they have a lot more options the have different suggestions? It is harder to find a regular straight SAE 80.


2018 Hyundai Santa Fe: Dealer oil and filter/5k
2012 Scion xB: QSUD 0w-20, CQ Blue, 5k
2002 Ford F150: GTX HM 5w-20, EcoGard, 1yr
1994 Honda VT1100c: Peak 15w-40, PSL, 5k




Re: 75w90 vs 80 [Re: blupupher] #4612661
12/24/17 02:32 AM
12/24/17 02:32 AM
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Originally Posted By: blupupher
[quote=Kev994]

Maybe since they have a lot more options the have different suggestions? It is harder to find a regular straight SAE 80.


I think that these fancy grades (75w85, 75w80,75w,...) are here just to save the fuel...like your CAFE thing with xW20 oily water smile

So unless you live far up on the north...you can use regular 75w90 and 80w90 grades for a better protection...


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: 75w90 vs 80 [Re: Kev994] #4613310
12/24/17 06:26 PM
12/24/17 06:26 PM
Joined: Dec 2013
Posts: 2,098
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,098
socal
My Colorado rear diff calls for 75w90 but i recently put 80w90 in it. So far, canít tell the difference. The coldest itís been here in SoCal is bout 44 F.


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)

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