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Jul 10, 2011 | 08:30 PM

bkenc

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From: Columbus, MT

Easy Oil Question

OK went into Wal-Mart for some oil. Tired of changing every 3K miles in my 2005 6.0 diesel, so purchased some 10-40W full synthetic. Realize I should be using 15-40W but will it really make a difference? Any motor issues using synthetic? Thanks in advance for a response.

Jul 10, 2011 | 08:41 PM

zhilton

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Joined: Mar 2007

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From: Claremore, OK

Quote:

Originally Posted by bkenc

The truck will be fine on the 10W40. You don't have to change the oil every 3k miles. Ford claims you can go 7500; but most folks are doing it at 5k miles since the oil gets sheared pretty hard...it's trashed before you get to 7500 miles.

Jul 10, 2011 | 08:41 PM

bismic

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What oil did you get? Is it CI4 or CJ4 rated?

Jul 10, 2011 | 08:42 PM

bkenc

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Trailering

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From: Columbus, MT

Thanks, just wanted to make sure.

Jul 10, 2011 | 08:44 PM

amdriven2liv

I'm hitting easy street

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From: Central Oregon

And make sure you have the right oil filter to go along with it.

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Jul 10, 2011 | 08:46 PM

bkenc

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From: Columbus, MT

Doesn't say anything about CI4 or CJ4 rated, just ACEA, A3,API, SN SL rated. So is this OK?

Jul 10, 2011 | 08:47 PM

amdriven2liv

I'm hitting easy street

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From: Central Oregon

Pick up the Rotella T6 synthetic. It's good and rated accordingly.

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Jul 10, 2011 | 08:58 PM

bismic

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Not if it isn't CI4 or CJ4 rated.

Diesel engines need diesel oil - to deal with the soot and potential acid formation.

Mobil 1 makes a GREAT synthetic 5W40 diesel oil.

I use the Rotella T6 also.

Jul 10, 2011 | 08:59 PM

#10

johnthoms

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Joined: Mar 2007

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From: Vt and long island ny

Sounds like mobil 1 for gas engines. The correct type of oils for are trucks are diesel specific oils,they encapsulate the soot that diesels make much more of than a gas motor. I would highly recommend using cj4 or ci4 rated oils and not take a chance our 6.0 are really tough on oil, seems I have had better starting and smoother idles since I switched to Rotella t-6 full syn great stuff

Jul 10, 2011 | 09:01 PM

#11

bkenc

Thread Starter

Trailering

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From: Columbus, MT

Wow, sure glad I asked the question. My first diesel and still learning. Thanks all!

Jul 10, 2011 | 09:15 PM

#12

ljutic ss

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From: Green Lane, Pa.

Quote:

Originally Posted by bkenc

Doesn't say anything about CI4 or CJ4 rated, just ACEA, A3,API, SN SL rated. So is this OK?

You purchased gas engine oil, don't use it in your truck.

Jul 10, 2011 | 09:31 PM

#13

johnthoms

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From: Vt and long island ny

Yea diesel only oils and OEM FILTERS can't stress this enough almost didn't catch local shop I had change the oil a few times and always look under hood when ever I get work done and saw new oil filter cap , looked closer and saw carguest in injet on side guickly informed my shop and they just shuruged and said didn't think it mattered.
Oh boy does it matter!!

Jul 10, 2011 | 09:41 PM

#14

bkenc

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Trailering

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From: Columbus, MT

I'll take the Mobil stuff back and hope Wally World has the T6. Thanks.

Jul 10, 2011 | 10:08 PM

#15

zhilton

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From: Claremore, OK

Quote:

Originally Posted by bkenc

Wow, sure glad I asked the question. My first diesel and still learning. Thanks all!

I forgot to ask in my first reply if the oil was CJ4 or CI4 rated...good catch there Mark. You most definitely want to make sure it's rated for one of those two. Sorry about that.