thinking of swicthing to delvac 1 in my 04 6.0 psd

[hapaschold]

been thinking about switching to the mobile delvac 1 syn. . been using the 15w40 delvac super with no problems in any other psd s.

just want to get some of the other vanner s thoughts...

almost 2000 miles.. no complaints.

thanks for the help,

[B1powered]

Very, very good stuff [img]/ubbthreads/images/graemlins/grin.gif[/img]

[Larry M]

I've never tried any of the Mobil products, but based on some preliminary oil analysis when I switched from Cheveron to Shell it might have helped my "soot" some. I would recommend setting up and getting on a good oil analysis program to help you in making decisions.

Any of the major brands, Cheveron, Mobil, Shell are good oils as are some other lesser known brands probably are.


Larry
keeper of the <font color="blue">"little secrets" </font> CLICK HERE [img]/ubbthreads/images/graemlins/smile.gif[/img]

[Aceman]

I tried all of the major oil brands in my van,
Shell Rotella T (dino and syn),Chevron Dello 400,Delvac,etc.
The best oil I have had great success with is the Ford Motorcraft 15w/40. [img]/ubbthreads/images/graemlins/smokin.gif[/img] It can be purchased at Walmart for $1.42/qt.
My engine runs a tad quieter,has great perfomance and mileage with this oil. [img]/ubbthreads/images/graemlins/biggrin.gif[/img] It is actually Valvaline oil specifically made for Ford according to my sources. The huei injectors in our vans and trucks are very reliant on oil quality.

The worst oil I used was the Delvac. [img]/ubbthreads/images/graemlins/shrug.gif[/img]

[ddog]

I just bought my van used and the oil was changed as part of the "Ford Certified" program. Some how this program missed thelarge crack in the tire carcass on one of the Goodyear HT tires.They machined the front rotors in an apparent attempt to cure a vibration problem. Anyway,They put new tires on it Michelins.Going off topic so let me get back.I assume they are using the motorcraft oil at the dealer.So far it seems ok.I haven't changed oil yet, but have this to offer for what its worth. Haven't read the back of the Synthetic brands, but read the back of the 15w-40 diesel oils in our market(Ihaven't seen a Valvoline diesel oil in our area and haven't read a motorcraft oil label) and so far the only one I have seen that specifies in writing on the label that it meets requirements for Ford and International is the Shell Rotella T. Remember the API classification is a minimum standard,and just because it meets the API standard doesn't necessarily mean it meets the manufacturers recommendations. Just some food for thought.Not trying to start a syn v. dino discussion here since there are many of those if you search the forums (good oil discussions in little secrets),but from a cost benefit point of view, it seems synthetic only works out if you use a bypass filtration system and oil analysis to safely go to an Extended drain interval.But these systems also allow you to extend the drain interval on a dino oil as well,so you would have to do the math. No way synthetics make sense IMO if you change them at the interval in the Owners manual.How long do you plan on keeping it? Has anyone done any cost/benefit analysis? You may want to put some more miles on the truck to insure its broken in before switching to synthetic.

[micbial]

I run a business that does mobile fleet maintenance. About half of my coustomers want synthetic oil in their engines. Recently one company that I have been servicing for over 4 years that has used Rotella synthetic in their engines since new recently had some management changes. The new manager in charge of the fleet thought that the synthetic oil was (in his words) "way to damn expensive". So he had me switch to a cheap no name oil that he supplies me in 55 gallon drums. Well this lasted about 2 weeks. First truck was a 98 C6500 chevrolet rollback with a 3126E caterpillar (fuel system is very much the same as a international), wiped 3 injectors out of this engine. Second was a 99 F450 7.3L DI wheel lift tow truck, wiped a cam lobe. Third was a 93 F-Superduty 7.3L IDI rollback, rocker arm wore valve tip down causing keepers to come out, resulted in droped valve. Fourth truck is a 02 Freightliner FL60 with a 5.9L ISB cummins. It has developed a knock still waiting to be diagonised.

This fleet of trucks has had regular sceduled maintenance and oil analysis done since I started working on them and short of the normal wear and tear items these are the first major engine problems they have had. Needless to say I have since switched back to synthetic oil after a long talk with the manager about what quality oil does for you in the long run. Also something to keep in mind is that this is a fleet of tow trucks that litterly get the piss run out of them. Of all the vehicles I service, tow trucks get the worst abuse. If this had been a fleet of regular pick-up's of vans many of the above engine problems might have taken months to years to apear.

All in all my personal preference is synthetic, I use it in my own E-Superduty service box trucks. Bottom line is you get what you pay for. I use delvac 1 in a couple of trucks I work on and have been very satisified with it's performance. And do your self a favor and get oil anylisis done. It usually pays for itself in extended oil drain intervalls.

[ddog]

I understand what your saying here(using a cheaper product doesn't necessarily save you money) but don't necessarily agree with the logic. Are you attributing the failures in your customer's trucks to runnning a non synthetic oil for two weeks? A truck that's been running synthetic since new "wipes a cam lobe" because of non synthetic oil for two weeks? sounds coincidental.If only one cam lobe is wiped out, probably a lubrication issue on that cylinder, partially blocked port,etc. Also a rocker arm is not likely to wear through a valve tip and drop the valve unless NO lubrication is present at the rocker. Better check for oil delivery on that pushrod/lifter not oil type.Of course overrevving is an other cause of dropped valves.Even with a no-name oil(was it api classified for diesel? even the 55 gal drums are marked) I think it would take longer than two weeks for these types of problems to show up. Your implying that these failures are the direct result of the "cheap" oil.How many miles on these vehicles as they sound like typical high mileage issues. How many vehicles total in the fleet that weren't affected? Not trying to argue for one type or the other since each has its own attributes and each individual has to weigh the cost/benefit for their application.