Motor oil weight for triton v10

dodge guy wrote:

bigbaddad wrote:
In 2009 at Hershey I asked the Ford guys why the 5-20 as opposed to the 10 - 30 I had used in general for many years. They smiled, said they loved all the stories they heard, but for the V10 it was mainly needed for engine tolerances which were tighter than in the past.

So they secretly got ahold of all the engines that required 5 or 10W30, pulled the motors and tightened up the tolerances then told everyone to start using 5W20? That is very good of them!

You drive a Chrysler product and wouldn't understand tight tolerances. They need straight 50 wt

I've said this before on other threads of the same subject-on mine with 80+k miles, 5-20W it'll use a qt every 2-3000 miles. With 10-30W no oil usage in 5-6000 miles between changes. I never saw any difference in the MPG

WILDEBILL308 wrote:

427435 wrote:

bigbaddad wrote:
In 2009 at Hershey I asked the Ford guys why the 5-20 as opposed to the 10 - 30 I had used in general for many years. They smiled, said they loved all the stories they heard, but for the V10 it was mainly needed for engine tolerances which were tighter than in the past.

While the tolerances are tighter, the MINIMUM clearances are not.

With improved machining that provide tighter tolerances, the maximum bearing clearance will be smaller, not the minimum clearance.

The reasons they smiled was that they weren't going to tell you it was about CAFE mpg.

You can try to spin this any way you want. We are not talking machining tolerances. Yes I know the difference. We are talking about the oil gap between the bearings. The V10 rod Bering gap is from 0.0011 to a maximum of 0.0023. Now given that the oil is a major contributor in keeping the lower end cool and you need a fairly good rate of flow to accomplish this why would you insist on not using the right oil. I would be using Mobil 1 0-20 if it was my engine.
Now can you tell me how many thousandths those numbers represent?
Bill

Could not resist; Just for grins i looked up the rod bearing clearences for a Ford 351ci, and a Ford 390ci: both .0008-0015. This is in 1969.
So--I guess, tighter tolerances yes but tighter clearences not.

427435 wrote:

bigbaddad wrote:
In 2009 at Hershey I asked the Ford guys why the 5-20 as opposed to the 10 - 30 I had used in general for many years. They smiled, said they loved all the stories they heard, but for the V10 it was mainly needed for engine tolerances which were tighter than in the past.

While the tolerances are tighter, the MINIMUM clearances are not.

With improved machining that provide tighter tolerances, the maximum bearing clearance will be smaller, not the minimum clearance.

The reasons they smiled was that they weren't going to tell you it was about CAFE mpg.

You can try to spin this any way you want. We are not talking machining tolerances. Yes I know the difference. We are talking about the oil gap between the bearings. The V10 rod Bering gap is from 0.0011 to a maximum of 0.0023. Now given that the oil is a major contributor in keeping the lower end cool and you need a fairly good rate of flow to accomplish this why would you insist on not using the right oil. I would be using Mobil 1 0-20 if it was my engine.
Now can you tell me how many thousandths those numbers represent?
Bill

bigbaddad wrote:
In 2009 at Hershey I asked the Ford guys why the 5-20 as opposed to the 10 - 30 I had used in general for many years. They smiled, said they loved all the stories they heard, but for the V10 it was mainly needed for engine tolerances which were tighter than in the past.

While the tolerances are tighter, the MINIMUM clearances are not.

With improved machining that provide tighter tolerances, the maximum bearing clearance will be smaller, not the minimum clearance.

The reasons they smiled was that they weren't going to tell you it was about CAFE mpg.

bigbaddad wrote:
In 2009 at Hershey I asked the Ford guys why the 5-20 as opposed to the 10 - 30 I had used in general for many years. They smiled, said they loved all the stories they heard, but for the V10 it was mainly needed for engine tolerances which were tighter than in the past.

So they secretly got ahold of all the engines that required 5 or 10W30, pulled the motors and tightened up the tolerances then told everyone to start using 5W20? That is very good of them!

In 2009 at Hershey I asked the Ford guys why the 5-20 as opposed to the 10 - 30 I had used in general for many years. They smiled, said they loved all the stories they heard, but for the V10 it was mainly needed for engine tolerances which were tighter than in the past.

I have been a full synthetic guy for years. I like castrol, but think all major marks are good.
Once again remember that most manufacturers state x miles OR key word OR 1 year. This also includes the transmission.
jw

Ductape wrote:

427435 wrote:
Vehicles over 8500 lbs GVW with the Ford f250 and F350 PU's are now covered.

People can keep on writing that until the mods get tired and lock this thread, but that won't make it true. What do you think "Exempt" means? As for me, I won't spend any more time trying to convince you or anyone else.

This vehicle would than have GVWR in excess of 10,000 lbs. In the past (up to 2012), vehicles over 8500 lbs GVWR weren't covered. Now vehicles under 10,000 lbs GVWR ARE covered-------just as YOUR link said.