300Tdi oil advice needed... - Defender Source
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  #1  
Old July 16th, 2006, 01:20 PM
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George Kase
1983 110 200Tdi CSW LHD
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300Tdi oil advice needed...

My 300Tdi came with 10w 40 from England...after buttoning everything up and running it for a bit I am about 1/2 to 1 qt low...I can't find any diesel labeled oil in 10w 40 at the local auto stores...just 15w 40...
the 10w 40 they do have isn't labeled petrol or diesel...should I use a quart of the 15w 40 or a quart of the 10w 40???
thanks
George
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  #2  
Old July 16th, 2006, 01:46 PM
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Use the 10w40 to top it off. Then at naxt oil change, go to the 15w40 and run that from now on. Nice to see you have it running already!
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  #3  
Old July 16th, 2006, 05:21 PM
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Jim Cheney
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You can mix grades with no issues whatosoever, especially in such a small quantity.

I use Mobil1 SUV formula, which is rated for diesel engines, but I think I'm switching to reline HD next time because the Mobil1 SUV stuff is hard to track down.
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  #4  
Old July 16th, 2006, 07:20 PM
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George Kase
1983 110 200Tdi CSW LHD
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Thanks guys...topped it off with 10w 40 and am looking at Shell Rotella T 15w 40 for its regular diet...
yes...it's running and it's great...i'll write a more in depth driving impressions post on chit chat in a day or so...
plus all the thanks I owe to virtually everyone on the list...but we'll get to that more officially in a bit...
Thanks
George
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  #5  
Old July 16th, 2006, 09:04 PM
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we use rotella in all of our diesals
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  #6  
Old July 16th, 2006, 09:44 PM
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Jack Walter
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If you really want to do the research you can go to the website of the Society of Automotive Engineers at www.sae.org and look up the various oil ratings - I think the latest diesel oils are "SG" rated.

I just run Shell Rotella T 15W-40W in all my cars - it keeps the insides of the engines very clean and is available at Walmart or Sams Club. Works great in Porsches and my diesel Rovers (SIIA and Tdi) both run the stuff.
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  #7  
Old July 17th, 2006, 04:32 PM
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George Kase
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just curious, do you use Rotella T synthetic or non synthetic?
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  #8  
Old July 17th, 2006, 09:45 PM
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Jack Walter
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I use the non-synthetic since I religously change my oil every 3300 miles. Synthetic is too expensive unless you extend your oil change intervals and I'd rather have clean oil in the engine more frequently.
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Old July 18th, 2006, 01:27 AM
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Jim Cheney
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Yeah, the old dino more regularly or synthetic with extended life question. There is too much opinion intertwined to reach a conclusion - so for my part, I think using more than a gallon of oil every 3k miles is wasteful, so I'd rather have synthetic and send less of it out with the recycling.
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  #10  
Old July 18th, 2006, 07:07 AM
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Jack Walter
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Remember that diesels put a lot of particulate contamination into their oil - thats why it turns so black so quickly - and the true diesel oils like Rotella hold those particles in suspension instead of allowing it to build up on the interior surfaces of the engine. This high detergent factor of Rotella is what also makes it attractive for use in air/oil cooled engines such as Porsches - clean engine interior = better heat transfer. I'm balancing it all out by returning the waste oil to the local NAPA for recycling and running Biodiesel as my primary fuel.
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  #11  
Old July 18th, 2006, 07:22 AM
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George Kase
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It seems for those of us in northern climates (-30F) that Rotella T synth 5w 40 is the way to go to ensure turbo health?
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Old July 22nd, 2006, 03:31 AM
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I've heard good things about the Shell Rotella oil(s) but, on recommendation of my mechanic, went with Chevron Dello in my 2.5L diesel.
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