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Redline MT85 OR MT90 #5214086 09/16/19 07:38 AM
Joined: May 2011
Posts: 1,209
dja4260 Online Content OP
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Joined: May 2011
Posts: 1,209
2013 Hyundai Elantra GT, with a manual trans. The car (2-quarts capacity) currently is running MT85 (75w85). I was going to swap the fluid out as it has 40k miles on it. I accidentally purchased Redline MT90 (75w90) online and cannot return...

Any thoughts on using this fluid? Both are spec'd for hyundai vehicles in general.


2013 Hyundai Elantra Gt Hatch 6 spd
2005 Toyota Highlander V6
1997 HD Sportster
Re: Redline MT85 OR MT90 [Re: dja4260] #5214090 09/16/19 07:47 AM
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Char Baby Offline
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My way of thinking is that it probably doesn't matter.
Will the Elantra be seeing winter duty?

Last edited by Char Baby; 09/16/19 07:48 AM.

Retired 6 yrs now & lovin' it
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Redline MT85 OR MT90 [Re: dja4260] #5214093 09/16/19 07:53 AM
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skyactiv Offline
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Go ahead and use it.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 18' Elantra Sport 6 speed manual
The rude guy that points out reality


Re: Redline MT85 OR MT90 [Re: dja4260] #5214108 09/16/19 08:11 AM
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Ded Mazai Offline
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If you cannot return it then the only way to find out if it is going to be fine in the winter is to use it. If I were you I would rather sell it and use a thinner oil because I doubt that that the thick oil will give you the same feel and the fuel consumption hit will be noticeable too.


BRZ | M1 HM 5W-20, FU | PZ Synchromesh.
Re: Redline MT85 OR MT90 [Re: dja4260] #5214150 09/16/19 08:54 AM
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CT8 Offline
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It will be fine.


2015 F150 2.7
2018 F350 6.2
Re: Redline MT85 OR MT90 [Re: dja4260] #5214266 09/16/19 11:07 AM
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MolaKule Offline
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Originally Posted by dja4260
2013 Hyundai Elantra GT, with a manual trans. The car (2-quarts capacity) currently is running MT85 (75w85). I was going to swap the fluid out as it has 40k miles on it. I accidentally purchased Redline MT90 (75w90) online and cannot return...

Any thoughts on using this fluid? Both are spec'd for hyundai vehicles in general.




Keep the 75W90 for next summer and reorder the two quarts of MT-85.


"As engineers [and scientists] we are wired to solve problems and to create new things, to challenge the status quo and push the limits..." Ken Hurt, Embry-Riddle University, Class of '97.
Re: Redline MT85 OR MT90 [Re: dja4260] #5214350 09/16/19 12:46 PM
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benjy Offline
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you can sell the mt-90 to me cheep! my older tt uses that + prolly due for a change. rarely drive it in pa winters but the jetta i drove year around had no issues with the mt-90.

Last edited by benjy; 09/16/19 12:49 PM.
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