oil change

10forty2 wrote:

othertonka wrote:

10forty2 wrote:
With it being that new, I would definitely use what the owner's manual recommends...at least through the warranty period. If you want to switch over to something else after that, then by all means....

For my 1999 model V10, I used synthetic Mobile 1, 5W-30 and the OEM Motorcraft filter for my recent oil change.

Ford recommends 5W x 20, not 5W x 30. Why did you use 5W x 30? Do you Know something that ford does not know? Just curious

Let me check...it may have actually been 5W-20 instead of 5W-30. I was typing from my fragile, elderly memory and not from my service notebook. But either way, the upper viscosity end of 30W isn't too thick to hurt anything and may actually be good in hotter running. The lower end is what is the most concern for that cold engine start. I'll check and correct myself if I used 5W20 instead. Thanks for catching that!

Nope...it was 5W-30 Mobile 1 Syn. Didn't really mean to spark off a national incident... ;-)

A new V-10, how could you go wrong with what Ford put in it? Wal Mart carries the Motorcraft 5w-20 synthetic blend and filter.

WILDEBILL308 wrote:
The problem with running a oil with higher viscosity than recommended is todays engines are not your fathers engines. The internal tolerances are much tighter than those built 50 years ago. The rod bearings in your V10 Std Size Oil Clearance: 0.0011/0.0023 in. main bearing oil clearance 0.0001 - 0.0018. When you run a higher viscosity oil you don't get proper lubrication.
But you can run what ever you want in your engine I won't have to pay any money for repairs. I would run Mobil 1 0-20 if it was my engine.
Bill

Like many others, you are confusing reduced tolerances with reduced clearances. The minimum clearance that a certain bearing will successfully run at has not changed. But with tighter tolerances, more bearings are closer to that minimum tolerance (nor are there as many bearings that are "loose."

The problem with running a oil with higher viscosity than recommended is todays engines are not your fathers engines. The internal tolerances are much tighter than those built 50 years ago. The rod bearings in your V10 Std Size Oil Clearance: 0.0011/0.0023 in. main bearing oil clearance 0.0001 - 0.0018. When you run a higher viscosity oil you don't get proper lubrication.
But you can run what ever you want in your engine I won't have to pay any money for repairs. I would run Mobil 1 0-20 if it was my engine.
Bill

5w-20 synthetic blend

Yes most of these new engines come with synthetic oils. My new CRV come with synthetic, but my 2003 V-10 engine come with regular oil and it run just as good as any synthetic oil and it cost a lot less.

The cam timing works fine with a variety of viscosities. Ford probably uses a 5w-20 oil to get a little better mpg in the PU's that the V10 is used in.

I've put a lot of miles on my V10 with either Mobil 1 15w-50 or 5w-40. Works fine and provides better lube strength when climbing a long, steep grade in 90 degree weather pulling a toad.

Be sure and use 5/20. It has to do with cam timing.
Its important.
Bob

jbrad13 - Full synthetic or a blend will work well in your V10. Your engine came with a blend so staying with a blend or going full synthetic will be OK.

The original V10 Ford used 5W30 then switched to 5W20 as part of the 3 valve head engine with the 2006 model year. Per Ford's literature - "New GF-4 engine oil replaces GF-3. Benefits include enhanced fuel economy, lower phosphorus reducing catalyst poisoning and decreased engine piston deposits and sludge (GEN-ES-10032)". The GF-4 was the ILSAC (International Lubricant Standardization and Approval Committee)API standard back in 2006. The current Motorcraft 5W20 blend is formulated to meet a GF-5 standard.

Mobile 1 full synthetic 5W20 has been serving me well enough per my analysis reports I have done with each oil change. Mobile 1 meets the GF-5 standards.

For more information http://www.oilspecifications.org/

Born To Travel wrote:
I would use conventional as that engine is not broken in yet and the rings and other parts break in better with that type, as synthetic is too "slippery" for the lack of a better word.. Run it for the first 5,000 miles or so and then decide..

You could be right, but I would like to say that my last 4 new cars 2 Toyota's, and 2 Honda's both came from the factory with synthetic oil. When I bought my Winnebago motorhome new from the first oil change on, I used synthetic oil. I also use synthetic oil in my Honda CRV, Harley Davidson, Cub Cadet riding lawn mower and my Whitfield Pellet Stove. I use Mobil 1, 5W - 30W Extended Range Synthetic Oil (silver plastic bottle with a gold cap). I also used 5W 30W Synthetic Oil in my Fleetwood Coach, Triton V-10 powered, that I owned in the 90's. I swear by it and wouldn't use any other oil.