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  #1  
Old November 12th, 2011, 07:00 PM
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winter oil advice 200tdi

With the temperature dropping, I would like to change the oil in my 200tdi to something more cold-temperature friendly. I am currently running 15W40 non-synthetic. From what I've read, synthetic would be the way to go. Winter temps here run single digits F and will dip to negative daytime highs for a week or 2. Sorry if this has been covered before but if there is any new information, any advice would be appreciated.
Thanks!
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  #2  
Old November 12th, 2011, 07:30 PM
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Do you store your truck inside in the winter (ie garage)? If so I'd think continuing 15W40 would be fine...it's only startup that I'd be worried about (if it's outside, overnight, in subzero temps). If it is outside, I'd think that switching to a synthetic would be a good call.

If you store it inside with a little bit of a higher ambient temp 15W40 should continue to be fine even in winter.
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  #3  
Old November 14th, 2011, 01:45 PM
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It does live in a garage, although unheated it doesn't really go below freezing. That is good for the morning, but like today it will sit at work all day out in the cold. I would imagine it would freeze solid in a couple of hours.
What weights are people using?
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  #4  
Old November 14th, 2011, 04:39 PM
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I use 15w40 syn all year round. The cold pour point of the 15w syn oils is very low. It is specifically made for diesels in the cold.

I use rotella T6
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Old November 14th, 2011, 04:49 PM
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Quote:
Originally Posted by Naplm00 View Post
I use 15w40 syn all year round. The cold pour point of the 15w syn oils is very low. It is specifically made for diesels in the cold.

I use rotella T6
Isn't the T6 a 5w40?
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  #6  
Old November 14th, 2011, 05:02 PM
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Rotella 5w40 synthetic
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  #7  
Old November 14th, 2011, 08:40 PM
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Is it ok to swap back and forth from synthetic to regular oil? I've been using Rotella T6 5/40 syn. But it's so much more expensive I decided to buy regular 15/40 Rotella today. Any thoughts??
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Old November 14th, 2011, 08:47 PM
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It's totally fine to swap back and forth...early on in the "synthetic" introduction there was the fear-mongering that once you go synthetic you can never go back. Not true - swap back and forth with no worries!

FWIW I run Rotella 15/40 in all my Rovers except the new one, and in all my cars that I own that are older than I am.
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  #9  
Old November 14th, 2011, 09:01 PM
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Always use 5w40 castrol full synthec for tdi oil. Runs it for 10 000km and do the oil change. Never had problem and once in a while it goes on sale at the store so I buy what I need cheaply. The engine is happier with synthec in winter and all year long for that matter. I wouldn't feed it anything else. If you want to have your engine running fine for a long time; clean oil and regular oil change. If you don't wanna go the synthec road at least change the oil frequently and the oil filter as well..
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  #10  
Old November 14th, 2011, 10:26 PM
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The easiest to find options for oils that are proven good by oil analysis and are not expensive are:

Shell Rotella T6, 5W-40
Mobil 1 Turbo Diesel Truck, 5W-40
Shell Rotella T5, 0W-40 (Good choice if doing very cold starts).

10000 km (6000 mi) intervals are a good safe start with any of these. Longer if the oil analysis is good for your engine.
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  #11  
Old November 15th, 2011, 09:18 AM
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Sorry that was my fault, yes the T6 is 5W40
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  #12  
Old November 15th, 2011, 03:30 PM
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I use T6 too, I change a little over every 5K
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