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Old 11-06-2010, 11:43 PM   #1 (permalink)
4320Diesel
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Factory and User Recomended Oils

this subject has come up about 1,009,341 times before( BTW those are exact numbers ) and i figured its about time to set stuff straight.

Factory Oil Recomendations:
32*F (0*C)and above SAE 30 Prefered
0*F (-18*C)and above SAE 15W-40
60*F (16*C) and lower SAE 10W-30

Factory Recomended Oil Change Intervals:
Use at frequent long runs at high speeds and high ambient temperatures
Operating in dusty areas
Towing a trailer
Idling for extending periods and/or low speed operation such as found in police, taxi or door-to-door delivery service.
Operating when outside temps remain below freezing and when most trips are less than 4 miles(6 KM) : every 2500 miles(4000 KM's) or every 3 months, whichever comes first.

When none of the above condtions apply, and as a general rule the vehicle is driven daily for a
- minimum of 15 miles(25KMs) or more
- or continuously for 30 mins or more.
: every 5000 miles (8000KMs) or 12 months, whichever comes first.



User Oil Recomendations (or most commonly used)
Summer: SAE 15W-40
Winter: Canadian winter(or very cold northern states) 0W-40
Winter: Mild winter 10W-30 or just 15W-40 all year.

Hope this clears up some questions on oil. Post what viscosity of oil you use at what time of year and what temps, and your oil change intervals.

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your wrong brent, i'll think of a reason later

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brent can't do that, it would look factory, lol

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Brent is right.
Was there any ever doubt?

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Old 11-06-2010, 11:47 PM   #2 (permalink)
IamDave0887
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Pickup - 15w-40 Amsoil full synthetic year round.

Blazer - 15w-40 Rotella T spring/summer/fall.
- 5w-40 Rotella T last winter. will be 15w-40 Rotella T this winter.

Eventually i'll switch the blazer to Amsoil, probably when i swap to a 6.5 style oil cooler around the time i install the Banks turbo after winter.

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Last edited by IamDave0887; 11-06-2010 at 11:47 PM.
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Old 11-07-2010, 01:13 AM   #3 (permalink)
Mikes85
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I run 15w-40 all year.
Rotella T for the most part.
Sometimes chevron delo

I do 5,000 mile changes for the most part. But mine is daily driven and I check my oil And if its getting g too dark for comfort I change early. (I own the only diesel on earth that the oil doesn't turn to black sludge in 30 seconds haha)
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mikes correct. twice today, wow man ,, lol.
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you guys ever wonder why my 6.2 goes so fast? all them rust holes, them is speed holes! makes it more areodynamical
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Ooh! De-railler! Chugga chugga chugga chugga whoo - D'oh!
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Ahh yes the old flex ring. Take the top cover off the IP and look for coffee grounds in the bowl. If yes that's the broken up flex ring. New IP and you're in business.
and ya'll call ME coffee grounds
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Old 11-07-2010, 01:12 AM   #4 (permalink)
koots
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I usually run 15W40 all year round (Rotella if i can get it).

I've run that stuff in my 4.3L, 6.0L and my 1.6L Honda motor and they all loved it. I only had the civic in milder winters though, but never had an issue with cold start oil pumping issues with the other trucks.
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Old 11-07-2010, 02:06 PM   #5 (permalink)
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15W-40 dino Rotella all year.
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Old 11-07-2010, 02:32 PM   #6 (permalink)
Diaric
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15w/40 rotella summer 5w/40 rotella or 0w/40 esso synthetic winter
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well to make your pump retarded, you could let it hang out with me for a day
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Diaric wins thread derailment......
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Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
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Old 11-07-2010, 03:23 PM   #7 (permalink)
smackzed
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Yeah I used that ESSO 040. It was great.
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Old 11-07-2010, 04:00 PM   #8 (permalink)
289Ksofar
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15W-40 year round. It very rarely gets to 32 deg here but I use it in favor of 30-weight for two reasons: A) the 30-weight is getting harder to find in gallon jugs, and B) the multi-weight oils have gotten a LOT better since the 6.2 engine was developed. I have run both and I don't notice any oil pressure issues from the 15W-40.

In fact, (and someone will correct me on this if I'm wrong) doesn't the 6.5L engine call for 15W-40?
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Old 11-07-2010, 04:08 PM   #9 (permalink)
Diaric
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15W-40 year round. It very rarely gets to 32 deg here but I use it in favor of 30-weight for two reasons: A) the 30-weight is getting harder to find in gallon jugs, and B) the multi-weight oils have gotten a LOT better since the 6.2 engine was developed. I have run both and I don't notice any oil pressure issues from the 15W-40.

In fact, (and someone will correct me on this if I'm wrong) doesn't the 6.5L engine call for 15W-40?
exactly... ignore what the service manual says about 30 weight or 10w/30 for that matter. the oils of now are so much Superior to 25 years ago, and its hard to find 30 weight unless your at a farm supply store. 10w/30 does not provide proper oiling at operating temps, it was recommended for cold use as it was the lightest oil of the time for cold weather. we now have cold weather oils that go to a 40 rating when at operating temps
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2001 VW TDI Jetta 4 door loaded 2001 VW TDI Golf 2 door swapped engine project
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well to make your pump retarded, you could let it hang out with me for a day
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Diaric wins thread derailment......
Quote:
Originally Posted by High Sierra 2500 View Post
Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
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Old 11-07-2010, 04:37 PM   #10 (permalink)
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15w40 year round, 4-5000 km intervals.......used oil dumped (screened then filtered) into fuel tank...

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