5w-40 in 6.0?

[Toy4x4runner]

For some reason, my 2007 6.0 owner's manual states the use of 15w40 and 10w30 for use in hot/mild climates. they spec the 5w-40 for use in like sub zero temps only. I checked a owners manual for a 2008 F250... (they still covered the 6.0). the 6.4 Oil chart differed from the 6.0's. the 2008 6.0 oil chart looks like mine. the 6.4L chart was different. they recomended 5w-40 in cold/hot climates. and also recomended 15-40 in warm climate.

So why the heck is 5w-40 ok for the 6.4 in like -30F to 100+F. but only good in the 6.0 below 10F? Still can't believe they recomend 10w30 over 5w-40 for the 6.0.... ? Looking for a 5w-40 that is CJ-4/SM compliant. No botique oils. so far I've only found the new Motorcraft 5-40 and Mobil 1 Delvac to fit the bill. the rotella and others are SL/CH4 plus or whatever.

 

[coffee]

Use the 5w40 year around and it will be perfect. Not sure which ones are CJ yet but Rotella T is easy to find at Wal Mart.

 

[Toy4x4runner]

so far the only one I found is Mobil 1 Delvac and Motorcraft 5w-40. I need to check local dealers for this new 5-40 M.c. if Rumored to be about $19.99/5qt jug. so about $4/qt. Compare to Mobil 1.... much cheaper.

 

[Ruby]

Toy 4x4runner

I checked with a Ford dealer in my area about the new MC 5w40. They said it was $4.23 per quart. I was just courious about the price. I haven't read any posts of anyone using this oil, but I'm sure it is a decent oil.

Good Luck
Ruby

 

[Toy4x4runner]

hhhmm.. so I guess when it comes down to the conventional 15w40, might as well just save my money and buy the MC in 5qt jugs (only options for me! ) or spend more and buy 4 gal of rotella or castrol. But I'd really like to swith to the 5w-40 SM/CJ-4 oil.... most like MC also, b/c of cost.

 

[ottomatic]

http://www.intellidog.com/dieselmann/home.html

http://www.ford-trucks.com/forums/forum107/

if you havent been on these sites. careful they could cost you money