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Fuels & Lubricants Discussion all about Fuels & Lubricants. synthetic oil, conventional oil, brands, change intervals, diesel grades, gelling and such debated items like that. Non TDI related postings will be moved or removed. This forum is NOT for the discussion of biodiesel and other alternative fuels.

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Old March 20th, 2006, 17:27   #31
nicklockard
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Default So in other words:

No one knows whether G52 is okay in a pre-2005 Jetta/Golf/Beetle?
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Old March 20th, 2006, 17:37   #32
dieseldorf
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Andy, do we know where the original G50 fits in?

thx.
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Old March 20th, 2006, 23:36   #33
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Default G52 for VEs

My RB Manual (1999-2002) sez to use G 052 145 A2 SAE 75 W90 (Synthetic oil).

When I changed the factory stuff out at 100K miles I went to the dealership and they sold me G 052.

I didn't know then there were more than one.
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Old March 21st, 2006, 06:24   #34
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I can't see how using a dino oil can be a good thing.
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Old March 21st, 2006, 06:41   #35
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I think part of this "story" is missing. If you went to the dealer over the past few years and asked to buy gear oil, the guy would give you G50...there were no other considerations made; it was the only product they had. It seems that "G52" is the default fluid and the dealers no longer inventory G50. If you want G50 they have to order it.

When I order G50 the last time, I was surprised to learn they didn't have any in stock. I asked what was being used should one of the technicians need it to service a car ( ). He said, "G52, of course. It's $8/L, would you rather have that? It's half the price."

So, clearly a change has been made and I am getting the impression that there are multiple products called "G52".

G50:



Maybe someone like TDitech or vwrobert can fill in the blanks and offer a reason for the change.
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Old March 21st, 2006, 09:58   #36
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..... Im running the G52 in my 2000 Jetta. Smoothe as melted butter when warm, but when it gets cold it feels more like a frozen block of butter.
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Old March 21st, 2006, 10:02   #37
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Quote:
Originally Posted by david_594
but when it gets cold it feels more like a frozen block of butter.
Yeah, that is TDitech's basic assessment, too.
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Old March 21st, 2006, 10:06   #38
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When I did my 5th gear swap last fall I was up in the air about MTL or G52(non synthetic). Went with the G52 and am really regretting it now to the point that I am almost ready to drain the tranny and put something else in.

Great that its 6.5 whatever when warm but it doesnt cut it in the cold. When I start the car before everything warms up I cannot hit 1st when rolling. Im wondering if the G52(synthetic) in the other bottle is any better when it comes to cold. Im considering ordering a bottle and sending a sample out for testing....
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Old March 21st, 2006, 15:50   #39
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Last year, I drained my OE fluid and replaced it with Redline MTL. Shifts were smooth warm or cold but the endcap seal on the tranny sprung a leak. I don't know if it's related to the MTL.. One year later, I changed my clutch and that leaking endcap seal so I had to put new fluid in. I used AMSOil MTG. I am very disappointed so far with the cold performance. Very notchy in 1st and second. I am going to drain it again very soon and am wondering what to switch to. So far, from reading this thread, I am leaning towards Redline again. I'll hang around some more to see where this rabbit hole goes..
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Old March 21st, 2006, 16:08   #40
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I'm looking at doing the 5th gear swap tomorrow, and wanted to put Redline MTL in. Couldn't find it, and waited too long to order it (d'oh!). I ended up getting Valvoline 75W90 full synthetic. I don't see it mentioned anywhere else here. Does anyone have any experience with it?

Thanks!
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Old March 21st, 2006, 17:00   #41
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Monkey, is it GL4?
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Old March 21st, 2006, 19:02   #42
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Dorf:
Yup, I just realized the same thing. I shall return this worthless GL5, and go with the ever-faithful AMSoil.

Thanks!
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Old March 21st, 2006, 21:36   #43
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Quote:
Originally Posted by TDImonkey
I'm looking at doing the 5th gear swap tomorrow, and wanted to put Redline MTL in. Couldn't find it, and waited too long to order it (d'oh!). I ended up getting Valvoline 75W90 full synthetic. I don't see it mentioned anywhere else here. Does anyone have any experience with it?

Thanks!

Redline MTL available at www.tdiparts.com for $10/quart
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Old March 21st, 2006, 23:00   #44
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Quote:
Originally Posted by Fix_Until_Broke
Redline MTL available at www.tdiparts.com for $10/quart

whew, glad i can get it a few miles away at a tranny shop for like 7.50!

Im reluctant though, after 4-6 months of use of MTL in an old suzuki sidekick that speced GL4, tranny sprung a massive leak! I put in some castrol... i dunno, XAF or something from a big drum at work, stopped leaking.
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Old March 22nd, 2006, 21:18   #45
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FWIW - i had Redline MTL tested by my local CAT fluid analysis lab and it came in at 10.8 cSt (very close to the claimed 10.6). and, after my very crude freezer testing i feel confident that Redline MTL flows faster than OEM G52 in below freezing temps. so...
  • Redline MTL is thinner / flows better in very cold temps than G52, and
  • Redline MTL is thicker / theoretically protecting better in hot temps than G52
the only question is fuel economy... is G52 the ultimate fuel economy gear oil???? (due to its super-low viscosity at normal operating temps...)

i'm going to give Redline MTL a try and see what happens...
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Last edited by SUNRG; March 22nd, 2006 at 21:20.
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