MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: K9 on February 02, 2017, 09:06:43 pm

Title: transmission oil change. what oil?
Post by: K9 on February 02, 2017, 09:06:43 pm
Hey, bout to change my transmission oil on my R32 mk5 manual. What oil can be used? been looking at 3L Castrol Syntrans Transaxle 75W-90. any good?
Title: Re: transmission oil change. what oil?
Post by: fab5freddy on February 02, 2017, 09:35:52 pm
I use this, Millers CRX 75w90 NT, recommended to me by Alex @ AKS  :happy2:
Title: Re: transmission oil change. what oil?
Post by: colesey on February 03, 2017, 06:28:35 am
I use this, Millers CRX 75w90 NT, recommended to me by Alex @ AKS  :happy2:

+1. Much better gear change when cold than the treacle VW supplied the car with.
Title: Re: transmission oil change. what oil?
Post by: pudding on February 03, 2017, 09:39:33 am
I use this, Millers CRX 75w90 NT, recommended to me by Alex @ AKS  :happy2:

+1. Much better gear change when cold than the treacle VW supplied the car with.

Treacle?  Water more like!  The VW stuff is seriously runny compared to other gear oils.
Title: Re: transmission oil change. what oil?
Post by: K9 on February 03, 2017, 09:56:25 am
So i can use the castrol one? 75w 90?
Says vw 501.50/G 052 911
Title: Re: transmission oil change. what oil?
Post by: pudding on February 03, 2017, 10:01:09 am
If in doubt, use G52 from VW.
Title: Re: transmission oil change. what oil?
Post by: Dan_FR on February 03, 2017, 11:00:24 am
I use this, Millers CRX 75w90 NT, recommended to me by Alex @ AKS  :happy2:
+1. Much better gear change when cold than the treacle VW supplied the car with.

Treacle?  Water more like!  The VW stuff is seriously runny compared to other gear oils.

Echo this, mega thin stuff that really helps from cold, countless stories of people running a 75w90 oil and complaining that the car struggles in to gears when cold. I'm changing mine in the next week or two and will be sticking with the genuine stuff
Title: Re: transmission oil change. what oil?
Post by: pudding on February 03, 2017, 11:36:06 am
I think there's a thread on myturbodiesel.com, or somewhere, where a chap sent the VW oil (and some other well known brands) off for analysis.

At 100 deg C, VW G52 is less than half the viscosity of the others.   It's thin to help with cold shifts as you say, and also reduced gear drag for better economy.  But I suppose as these gearboxes get old and rattley, a thicker oil might help when up to temperature, at the expense of cold shift quality.
Title: Re: transmission oil change. what oil?
Post by: Paradox1 on February 03, 2017, 11:55:09 am
I think there's a thread on myturbodiesel.com, or somewhere, where a chap sent the VW oil (and some other well known brands) off for analysis.

At 100 deg C, VW G52 is less than half the viscosity of the others.   It's thin to help with cold shifts as you say, and also reduced gear drag for better economy.  But I suppose as these gearboxes get old and rattley, a thicker oil might help when up to temperature, at the expense of cold shift quality.

You have to remember in cold months, not many people warm up there cars like we do. just turn the engine on and drive...lol
Title: Re: transmission oil change. what oil?
Post by: pudding on February 03, 2017, 12:02:02 pm
I think there's a thread on myturbodiesel.com, or somewhere, where a chap sent the VW oil (and some other well known brands) off for analysis.

At 100 deg C, VW G52 is less than half the viscosity of the others.   It's thin to help with cold shifts as you say, and also reduced gear drag for better economy.  But I suppose as these gearboxes get old and rattley, a thicker oil might help when up to temperature, at the expense of cold shift quality.

You have to remember in cold months, not many people warm up there cars like we do. just turn the engine on and drive...lol

Lol, I don't warm mine up either  :smiley:    Idling a car in the cold to warm it up is the worst thing anyone can do to an engine.  Best to just drive it normally and get it up to temp as quickly as possible  :happy2:
Title: Re: transmission oil change. what oil?
Post by: K9 on February 03, 2017, 12:04:38 pm
So how much is the difference between 75w 80 and 75w 90? Both castrols.

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Title: Re: transmission oil change. what oil?
Post by: Paradox1 on February 03, 2017, 12:17:13 pm
I think there's a thread on myturbodiesel.com, or somewhere, where a chap sent the VW oil (and some other well known brands) off for analysis.

At 100 deg C, VW G52 is less than half the viscosity of the others.   It's thin to help with cold shifts as you say, and also reduced gear drag for better economy.  But I suppose as these gearboxes get old and rattley, a thicker oil might help when up to temperature, at the expense of cold shift quality.

You have to remember in cold months, not many people warm up there cars like we do. just turn the engine on and drive...lol

Lol, I don't warm mine up either  :smiley:    Idling a car in the cold to warm it up is the worst thing anyone can do to an engine.  Best to just drive it normally and get it up to temp as quickly as possible  :happy2:

How is it bad for the engine???

Im not saying I sit there for 20minutes  lol. I give it a minute or so(cleae windscreen, choose album and what no) then just cruise until its warm
Title: Re: transmission oil change. what oil?
Post by: Shoduchi on February 03, 2017, 01:15:29 pm
How is it bad for the engine???

Im not saying I sit there for 20minutes  lol. I give it a minute or so(cleae windscreen, choose album and what no) then just cruise until its warm
1 minute isn't that significant. The principle is that it takes longer for the engine to warm up when the car is stopped and that wears more the internals than just starting the engine and rolling calmly.
Title: Re: transmission oil change. what oil?
Post by: pudding on February 03, 2017, 02:06:01 pm
I think there's a thread on myturbodiesel.com, or somewhere, where a chap sent the VW oil (and some other well known brands) off for analysis.

At 100 deg C, VW G52 is less than half the viscosity of the others.   It's thin to help with cold shifts as you say, and also reduced gear drag for better economy.  But I suppose as these gearboxes get old and rattley, a thicker oil might help when up to temperature, at the expense of cold shift quality.

You have to remember in cold months, not many people warm up there cars like we do. just turn the engine on and drive...lol

Lol, I don't warm mine up either  :smiley:    Idling a car in the cold to warm it up is the worst thing anyone can do to an engine.  Best to just drive it normally and get it up to temp as quickly as possible  :happy2:

How is it bad for the engine???

Im not saying I sit there for 20minutes  lol. I give it a minute or so(cleae windscreen, choose album and what no) then just cruise until its warm

Depends how long your journey is, but 1 min is OK.   It's engines that never get hot enough to burn off the acidic condensation inside the engine that are the problem, hence why I never buy cars from women or very low mileage cars for their age.
Title: Re: transmission oil change. what oil?
Post by: K9 on February 04, 2017, 12:07:11 pm
So i ended up using castrol vw approved 75w 90 oil. Works much nice then the old black dirty oil. Also was in the mood and changed the haldex fluides to. The haldex fluides was all dirty and gray?! And seemed to have water to... now new yellow oil.

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