You will have to deal with the smog Reguirements where you registar the vehicle. The Fed.'s pass a law a few years back that all states will have to comply with Cal.'s requirements. Cal. law are limited to California. Each state sets ther own limites. You may want to check with your state first.
My (TV) is my everyday vehical, is a 1996 Dodge Ram 2500hd, w/a V-10, 270,+ miles. New almost 14 mpg, now it's 11.5 mpg. Not bad for 16 year old. Trans and Diff L/S, serviced once a year 26 Apr. date accquired. I change coolant every other year (June). It hates stop and go traffic. With a 31 ft., 5th.whl. @13,000lbs. Is 9 to 10.5 mpg. Coast to Coast E/W (3) times Border to Border to many to count. I retire in Sept. May get a new engine or a new truck? Unsure!
I'm not one who will change something just because. There should be a sound reason or requirement.
Why do you want to change the existing OIL's?
The OEM of the truck provide a book to go with the truck informing you on how, where, when, and why somethings are to be done.
It's your choice on the type or product to find and use.
But! Changing from one type of oil to another after the brake in is completed, and several thousand miles of use, is a decision one should not take lightly. You can't help it if buy something used.
I have used the same oil type and weight since 1996 and change every 3-4000 miles, that is 266,+ miles ago. I loose about a 1/2 to 3/4 of a qt. between oil changes. Not bad for a 16 yr. old truck. A once a year I will clean the engine oil system. In April the month I got the truck. And service the rear end at the same time.
I have a 1996 Dodge 2500hd, V-10 engine, Auto trans, limited slip rear end, 264,000 miles. I have change oil every 3,000 miles. USE a GOOD OIL and a good filter. Lube the chassie and adjust the beakes. Keep the water Full. And go!
I was looking into up grading 1975 F-150 which was somewhat modified from its orginal power. Went from a 390 to a 410, included a trans up grade work well until they removed the lead for the gas.
In 1996 San Diego has a car and truck show in January at the convention center.
Went looking at all of the 3/4ton trucks that year. Most had large block V-8's. Ford had cut a way V-10 to show. But. Ford had nothing in production. Same for GM.
Now in 1994 dodge came out there version of a V-10.
I didn't get the diesel version, mostly I leave overnite stops at 0300 to 0330 not sure about letting a diesel run to warm up at that time of day.
So in 1996 I did look at the Dodge version of a V-10. First there was no need to change or up garde the power. POWER! Water, Gas, oil, and lets go. Second the transmission cooler was a stand a lone. No more transmission cooler in the radiator. No additional heat to cooling system. GREAT!
This my next puller! So in April 1996 I had my New Truck! V-10(488Ltr). Ordered w/the Tow Package. Well Tow package came with a 120 amp Alt., HD Flasher, Wire harnes for Brake control unit, and Plug for dock bumper. WOW! Took an hour to find the other half of the wireing harnes under the dash board. That it! Ok! where is the over load set up for the rear axal? Well it seem if you want the over load system for the 1996. You would have to order the Camper package too! It seem in 1996 the two package were seperate offer's. So you had to order both. HMMMM!
Ok! 6 months later, I had the over load set. And a weekend to install.
That was 16 years, and 268,600 miles ago. Same original engine, unwork. 11.5 to 12.4 mpg.
It Still Runs today!!!!!
All the electrical power comes from the 120 Amp circuit braker in the fuse and circuit braker box next to the left fender.
Sorry about the long winded responce.