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My trailer is 21ft, no more than 5500lbs, loaded. I know how modern smallblocks tow- (making power with RPM), the 250 does the same thing. I just pull 55-60mph and lock out O/D. I typically get much better mileage than most when pulling just by doing that. My old F150 needed helper springs in...

All, I am thinking of selling my F250 and getting into a 2005 Yukon XL 4wd. Tow package, 5.3, 3.42 gears, locking axle, 112k on it, single owner texas truck,fairly loaded, Bose, leather, etc. This would enable the family to go camping in only one vehicle (4 kids), still have a 4wd for hunting...

Originally Posted By: Traction After having 2 different Chevy 4WD trucks running Blizzaks I found 4WD not needed most of the time, although fun. So, I went back to 2WD with 4 Bizzaks, and locking diff that the 4WD trucks didn't have. Sure it would be nice to have 4WD once in a while, but the 2WD...

Folding knife. Phone. Keys. One of these three- Ruger LC9. Ruger SR9C. or Ruger GP100. If I am in a rush, there is a Ruger P90 in the truck with one spare loaded mag, one empty mag, and about 75 rounds. Each vehicle has body armor, a few MREs and other essentials.

Originally Posted By: tig1 Originally Posted By: 95busa 1.) I am saying that I do not believe, as many also do not believe that 20wt oil is ideal in some 3V 5.4L V8s. 2.) Do I believe engineers make mistakes. Yes. 6.0L powerstroke. I think in this case engineering was compromised by a directive...

I agree- noise versus actual issue- however, I think we can agree neither the phasers, the chains, guides or exhaust manifolds were designed to make these kinds of noises, because again, I have driven many 3V 5.4s that did not make noise. -What evidence is there that thicker oil does not result...

1.) I am saying that I do not believe, as many also do not believe that 20wt oil is ideal in some 3V 5.4L V8s. 2.) Do I believe engineers make mistakes. Yes. 6.0L powerstroke. I think in this case engineering was compromised by a directive to use 5w-20 oil, or that early cam phasers were not...

I hear you, but oil filters have super small oil passages as well, and they manage to get oil through them. Its only a 10w at startup, and I imagine a 40 weight at 100C is still thinner than a 10w at startup. If it makes different crazy noises, I will drop to a 5w-30 or 10w30 HDEO. I already...

I can answer this one with one truck. I have an F250 with a posi. Without the 4WD engaged, it gets stuck or spins. With the 4WD, it goes pretty much anywhere. Two pushing does not equal one pulling and one pushing.

Originally Posted By: DemoFly Everyone I know who owns a 3V is a hypochondriac about their engine. I think some spend more money on "repairs" and "diagnosis" then they would for an entire engine swap. I am trying to spend as close to zero money as possible. I have been driving for 24 years...

I unplugged both VCT solenoids, no change to noises. At this point I am thinking phasers, tensioners/chain noise, or outside chance exhaust. I am going to do the fogging idea and put the exhaust thing to bed once and for all. If the 10w40 makes the noise go away I am going to consider it good...

Originally Posted By: donnyj08 Originally Posted By: 2010_FX4 Is not the heavier oil simply "masking" an issue? Heavier oil is not correcting the actual problem. My 3V had 5W-20 for about the first 100K of its life and now I am running 0W-20. No problems to date; it does not mean there may not...

Originally Posted By: steve20 Re checking for exhaust leak What I have done in the past is to get some fogging oil in aerosol (Advance or Zone). Find an area past your MAF so you don't get oil spray on any electrical components in the intake tract. Have someone spray away till it starts to smoke...

Originally Posted By: -SyN- Before Kole left for college his 5.4L had a tick on the drivers side... #5 cylinder. Mechanic replaced all plugs and checked compression in all cylinders... #5 plug was wore enough where there was a slight misfire! Not enough to throw a CEL or Code! Had all 8...

Originally Posted By: jaynissan12 Originally Posted By: 2010_FX4 Is not the heavier oil simply "masking" an issue? Heavier oil is not correcting the actual problem. My 3V had 5W-20 for about the first 100K of its life and now I am running 0W-20. No problems to date; it does not mean there may...

By the way, this truck only has 65 or 66K miles on it. It is not what I would think is worn out by any means.

Originally Posted By: pbm I would go up in oil weight incrementally starting with 5w30 then 10w30 etc...I doubt you need to jump directly to 10w40. 10w-40 is what ford specified as a fix in a TSB. I was torn between 5w-40, 10w-40 and 15w-40. I am going to run the 10w-40 and see how it works.

Originally Posted By: Doog Using Supertech oil might be part of the issue. I would have tried PYB 10w30 first. I doubt it. I ran Motorcraft synblend 5w-20 and Mobil 5000 5w-20 as well, all with motorcraft filters. It always ticked.

Well, after being a thin oil advocate forever, and sticking by 5w-20 for the 3V 5.4 in my F250, I now believe that 5w-20 is not ideal for my engine. I understand these engines to be very "tolerance" dependent, and some engines have different bad or stacked tolerances that produce different...

Old thread, but.....I will say this- the non-PI 4.6 crown vics got over 200K easy in police service. Some agencies used 15w-40 in them. I drove them with 15w-40 and with 5w-30, and they ran better with 5w-30. It is nonsensical to say there is no performance advantage to lighter oil. The oil is...