10w30 in my 6.0?

[dlcarr]

I've read on here that some guys are switching to 10w30 in the 6.0s . I've got an oil change coming up and was wondering if this is a good idea. I understand the reasoning behind this because of the shearing from the injectors. Reasons for and against would be great. Thanks

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[mazsecond]

As long as your running a good full syntheitc oil in your truck thast all that matters. Most guys on here are running Shell Rotella T6, Mobile 1 TDT, or Amsoil.
The weight of the oil just affects how it performs in hot or cold weather. generally most synthetic oils come in 5W-40 which is pretty much the best of both worlds. It has great cold start capabilities and perfroms teh same at full operating temp (actually better than a 10W-30) as teh factory 15W-40 dino oil.

Bottom line if I were you I would run a 5W-40 Full Synthetic oil and use only the Motorcraft Filters and change every 5K miles.
That and quality fuel will keep your injectors happy

[mazsecond]

Oh and...

[cartmanea]

It depends on how heavy you tow during the hot summer months. I would have no problem running a 10w-30, but I rarely tow. Also, I would do a UOA to check for wear metals after 4-5k to see how the lighter oil is protecting your engine internals.

[Baddestt]

I ran the Shell Rotella T5 since it came out, and when I brought my truck new I switched to 10w30 my first oil change and never looked back. The past two oil changes, I've run the Amsoil ACD 10w30 diesel synthetic...I picked up 1.2 mpg when I first switched from Motorcraft 15w40 to the 10w30. I picked up .3 mpg when I went from the T5 to the Amsoil ACD 10w30...and can go 660 miles to a full tank (29 gallons)...i'm a 23.4 mpg on the highway, at no more than 2000rpm..I've done EVERYTHING I can to get 24mpg, and it just won't happen lol.

I've always been a fan of decreasing parasitic drivetrain loses and increasing fuel mileage.

I would run 10w30 without hesitation (and I've towed with the Amsoil ACD)...if you tow heavy constantly in the summer, 5w40 or 15w40 synthetic may be the better choice.

[cartmanea]

You won't be getting 24 mpg with 4.10 gears unless you keep it under 55

[dlcarr]

I tow about 6500 pounds going camping every weekend.

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[lx_2nv]

Very interesting. Any 10W-30 - or is there a specific one for diesels? I tow about 10k pounds a couple times a month.

Thanks.

[dlcarr]

Originally Posted by Baddestt

I ran the Shell Rotella T5 since it came out, and when I brought my truck new I switched to 10w30 my first oil change and never looked back. The past two oil changes, I've run the Amsoil ACD 10w30 diesel synthetic...I picked up 1.2 mpg when I first switched from Motorcraft 15w40 to the 10w30. I picked up .3 mpg when I went from the T5 to the Amsoil ACD 10w30...and can go 660 miles to a full tank (29 gallons)...i'm a 23.4 mpg on the highway, at no more than 2000rpm..I've done EVERYTHING I can to get 24mpg, and it just won't happen lol.

I've always been a fan of decreasing parasitic drivetrain loses and increasing fuel mileage.

I would run 10w30 without hesitation (and I've towed with the Amsoil ACD)...if you tow heavy constantly in the summer, 5w40 or 15w40 synthetic may be the better choice.

How many miles are on your truck now with the 10 w 30?

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[Baddestt]

Originally Posted by lx_2nv

Very interesting. Any 10W-30 - or is there a specific one for diesels? I tow about 10k pounds a couple times a month.

Thanks.

It must be a DIESEL rated 10w30:

Shell Rotella T5 10w30 diesel oil (syn blend)
Amsoil ACD 10w30 diesel oil (100% synthetic)
Motorcraft 10w30 diesel oil
John Deer 50 Plus 10w30 diesel oil