what oil do i use?
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Elder User
Joined: Oct 2008
Posts: 550
Likes: 1
From: Colorado
what oil do i use?
I am new to these trucks and I have a 70 f100 with a freshly rebuilt i6 300 with a c6. I am going to be changing the oil and from what i could find people say to use 15w-40 and other say 10-30 or 10-40. Nothing I could find specified if that was for newer or older worn out engines. I assume 10w-30 would suffice but I dont want to be the "***" that assumes.
Cargo Master
Joined: Feb 2006
Posts: 3,009
Likes: 250
From: North Pole, Alaska
The older engines need to use zinc (ZDPP) to prevent excess wear. Modern oils have had it removed by the EPA, and modern engines don't use the older types of lifters and cams which need the zinc. That is why diesel oil still contains zinc. Quaker State makes a 5/10W-30 high mileage oil that contains zinc, besides the Rotella. Search this site and also Google for info on ZDPP.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Thumper, We live in a world today with choices and feel good. It makes some folks feel good to spend extra money on oil with additives. While there has been no rising number of failures recorded due to the non use of those oils with additives, some will declare you must use them to run an old engine.
Should you find yourself with extra jingle in your jeans, and you feel better spending it on oil with additives, please do.
Your favorite 10W30 with a good filter on a regular change schedule should prove a good choice too.
John
Should you find yourself with extra jingle in your jeans, and you feel better spending it on oil with additives, please do.
Your favorite 10W30 with a good filter on a regular change schedule should prove a good choice too.
John
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Logistics Pro
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Post Fiend
Joined: Jun 2003
Posts: 8,209
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From: Black Hills of SD
No zinc in the new Rotella I'm told. It's was reformulated in 2009 for low emissions on new diesels and zinc will jack up the particulate filters. Straight from a Dodge tech.
Post Fiend
Joined: Apr 2008
Posts: 8,261
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From: Big Sky Country
The current CJ-4 rated Rotella contains 1200ppm of zinc, down from a high of 1500-1600ppm of the old CG-4 and CH-4 rated Rotella.
So yes, Rotella's zinc content has taken a hit over the recent years, but it still far exceeds the 800ppm minimum recommended for flat tappet motors.
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
"No zinc" is a bit of a stretch, but the new formula certaintly contains less zinc than older formulas, due to EPA regulations.
The current CJ-4 rated Rotella contains 1200ppm of zinc, down from a high of 1500-1600ppm of the old CG-4 and CH-4 rated Rotella.
So yes, Rotella's zinc content has taken a hit over the recent years, but it still far exceeds the 800ppm minimum recommended for flat tappet motors.
The current CJ-4 rated Rotella contains 1200ppm of zinc, down from a high of 1500-1600ppm of the old CG-4 and CH-4 rated Rotella.
So yes, Rotella's zinc content has taken a hit over the recent years, but it still far exceeds the 800ppm minimum recommended for flat tappet motors.
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
No problem Mike. 
Willowbilly, i don't have a specific link per se, but if you're so inclined you can contact fellow forum member "Bullitt390".
He's a journeyman diesel mechanic who regularly sends in Rotella for oil analysis (Blackstone laboratories i believe, but don't quote me on that).
Anyways, that's where i got the numbers from, i believe they were from early 2012.
He's a journeyman diesel mechanic who regularly sends in Rotella for oil analysis (Blackstone laboratories i believe, but don't quote me on that).
Anyways, that's where i got the numbers from, i believe they were from early 2012.
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