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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 September 12th, 2010, 18:23   #1
Poolboy1191
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Smile Mobil 1 VS. Rotella T6

I'm looking at doing an oil change this weekend, but I have 1 questions.

What should I use?

Mobil 1 TDT 5w40 synthetic
or
Rotella T6 5w40 Synthetic??

Any body ever use these??

This is my first oil change with this car. lol.

Thanks Ya'll!!
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Old September 12th, 2010, 18:26   #2
dieseldorf
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I've heard of a couple people using these oils.

For the added protection, I'd fly with M1 TDT.

Good luck!
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Old September 12th, 2010, 18:44   #3
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M1 TDT, lots of people using it with success.
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Old September 12th, 2010, 18:53   #4
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Can't go wrong with either.

I use TDT in my diesel and T6 Rotella in the gassers.
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Old September 12th, 2010, 19:06   #5
Geoxp
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Been using the Rotella in my Kenworth as well as my Jettas for years. No issues
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Old September 12th, 2010, 19:43   #6
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Quote:
Originally Posted by dieseldorf View Post
I've heard of a couple people using these oils.

For the added protection, I'd fly with M1 TDT.

Good luck!
For the OP, use either.

<soapbox>

I don't think TDT has a leg up on Rotella 5w40 anymore since T6 came out (vs. the ol' T).

Nor did it really have any leg up in the past with T... there was hype and myth about TDT being superior to Rotella T when both met CI-4+ or CJ-4 and both were so very overbuilt for this application.

</soapbox>
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Old September 12th, 2010, 19:51   #7
sendjonathanmail
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Quote:
Originally Posted by Bob_Fout View Post
For the OP, use either.
<soapbox>
I don't think TDT has a leg up on Rotella 5w40 anymore since T6 came out (vs. the ol' T).
Nor did it really have any leg up in the past with T... there was hype and myth about TDT being superior to Rotella T when both met CI-4+ or CJ-4 and both were so very overbuilt for this application.
</soapbox>
Isn't T6 just the old T just relabeled?
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Old September 13th, 2010, 04:58   #8
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From T6 website

UNSURPASSED SHEAR STABILITY
Shell Rotella® T6 5W-40 provides unsurpassed protection against shear-stability degradation, compared to the leading competitive API CJ-4 5W-40 products. An extremely shear-stable product helps maintain consistent viscosity and oil pressure in the engine.

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Old September 13th, 2010, 05:24   #9
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Rotella T every 5k (after first 20k free dealer maint probably with Castrol).

This oil change it'll turn 200k.

No issues, clean inside.

Which will cause folks to complain about my 5k intervals - but it's what I feel comfortable with.

Rotella T and OEM filters is my combination.

TDT could be wonderful. I do think it's more expensive. I'd rather run an oil that meets spec and change it more often. One could spend just as much on oil analysis to know whether they can run the oil longer. I'd rather just change it. But perhaps that's just me.

Good way to start a war - an oil question. There will be lots of opinions. And someone with comments on the "multi level marketing" oil are sure to show up. It could be fine too.

Rotella is one of the two you asked about. I've been using it with no issues at all.
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Old September 13th, 2010, 05:50   #10
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Quote:
Originally Posted by velociT View Post
Can't go wrong with either.

I use TDT in my diesel and T6 Rotella in the gassers.

Same here!!
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Old September 13th, 2010, 06:00   #11
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Quote:
Originally Posted by davebugs View Post
Rotella T every 5k (after first 20k free dealer maint probably with Castrol).

This oil change it'll turn 200k.

No issues, clean inside.

Which will cause folks to complain about my 5k intervals - but it's what I feel comfortable with.

Rotella T and OEM filters is my combination.

TDT could be wonderful. I do think it's more expensive. I'd rather run an oil that meets spec and change it more often. One could spend just as much on oil analysis to know whether they can run the oil longer. I'd rather just change it. But perhaps that's just me.

Good way to start a war - an oil question. There will be lots of opinions. And someone with comments on the "multi level marketing" oil are sure to show up. It could be fine too.

Rotella is one of the two you asked about. I've been using it with no issues at all.
It would appear using 5,000 miles OCI's,that even you are true not "comfortable" with Rotella T and T6, despite VW oem recommendations of 10,000 miles.

I do agree with your procedure, just the intervals and brand are different - M1 5w40 TDT @ 25,000 miles. It however does NOT meet VW specifications. It never has. There are absolutely no issues, totally clean inside (144,000 miles) Sure instead of doing an oil analysis, I just change it. So it is not just you.

I think one should do oil analysis if:
1. one suspects a problem (ie. G12 coolant leak to oil sump, etc)
2. is uncomfortable for whatever reasons
3. just want the information.

So in 200,000 miles you are obviously @ comfort changing 40 times, to (my) 8 times. You are correct, I am just fine with that.

The cost break down is per mile lubricated= .001145 cents (4.5 qt @ (WalMart 21. per 1 gals=) $5.25= $23.63+5.00 filter= $28.63/25,000)

Last edited by ruking; September 13th, 2010 at 08:02.
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Old September 13th, 2010, 06:17   #12
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I used Rotella T6 last time around. I figure it will be fine.
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Old September 13th, 2010, 07:51   #13
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Quote:
Originally Posted by sendjonathanmail View Post
Isn't T6 just the old T just relabeled?
It's not the exact same, it's similar but improved.
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Old September 13th, 2010, 07:59   #14
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Quote:
Originally Posted by davebugs View Post
TDT could be wonderful. I do think it's more expensive. I'd rather run an oil that meets spec and change it more often.
Neither oil in question meets VW specs, both oils in question meet many of the same specs, namely API CJ-4 (plus other HD engine specs).
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Old September 13th, 2010, 08:00   #15
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Quote:
Originally Posted by loaba View Post
I used Rotella T6 last time around. I figure it will be fine.
Just making sure that you're aware that according to VW, you should only be using an oil with a 505.01 (or greater) spec in your 2006... (Many people ignore this and use a high-grade synthetic like T6 or TDT, but... it's an informed choice on their part, and they're willing to live with the possible consequences...)

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