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Thread: Rotella vs Delo

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    93 F-250 4X4 - 7.3 Diesel Max's Avatar
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    question Rotella vs Delo


    What are the opinions on Rotella and Delo for the 7.3 ? Is one better then the other ?

    93 F250 Extended Cab 4X4
    7.3 Ford Factory Turbo
    4:10 limited Slip
    ZF5 Trans
    Banks Downpipe, 3.5" Exhaust w/Aero Turbine Muffler
    Hypermax Cowl Induction Air Intake
    Ride Rite Air Bags
    161K original miles

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    Cow hand Feed Bunk's Avatar
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    People seem to have good luck with either. I personally dont like rotella. It seemed like our engines smelled like hot burning oil at idle when we used to run it. Delvac or Delo are my pics.
    94 F-250, RC, xlt, 4x4, 4.10, zf5, dana 60
    Old setup-7.3 factory turbo, ats turbo outlet and downpipe, 3.5" straight pipe

    New setup-5.9 cummins 12v, colt camshaft, edge jammer turbo, 370 injectors, dana 80 rear, air dog, and working on more!



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    Is getting worn out dyoung14's Avatar
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    i have used them all, but i just use rotella cause its very readily found around here
    ~David~

    "THE TOY" 1986 Ford F-250xlt lariat 4x4 t-19, 89 model dash and gauges powered by an 83 model 6.9 engine bored .020 with all gaskets copper coated, turbocharged, wasetgate unplugged,7.3 turbo pump maxxed, turbo injectors, 7.3 rockers, ram-air intake, max boost is more than anyone else. will turn the whole road black if i want it too

    Who says idi's cant make high boost?

    1995 F-350 DRW 2wd ZF5 ext. cab, 7.3 powerstroker, 6637 intake, choped exhuast

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    Full Access Member reklund's Avatar
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    I like Delo better myself, but have run both. My truck seems to smoke a little differently when using the Rotella, but it never seems to use much, if any.

    Ryan
    1992 F-250 Supercab XLT 4WD ZF-5 4.10 gears. ATS Aurora 2000 wastegated turbo, ATS Intercooler, 4" MBRP exhaust, Boost/EGT gauges, Factory 95-97 Alloys, 285 75 16 BFG AT's, Edelbrock IAS Shocks, Add-a-Leaf leveling kit up front, Firestone Airbags in the rear, Upgraded to Factory XLT Buckets from a 1993, Tuffy center console with Galaxy CB, Killer Stereo, 122,000 miles and counting...

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    93 F-250 4X4 - 7.3 Diesel Max's Avatar
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    Quote Originally Posted by reklund View Post
    I like Delo better myself, but have run both. My truck seems to smoke a little differently when using the Rotella, but it never seems to use much, if any.

    Ryan

    Ryan,

    Does your truck smoke more on Rotella or Delo ?

    93 F250 Extended Cab 4X4
    7.3 Ford Factory Turbo
    4:10 limited Slip
    ZF5 Trans
    Banks Downpipe, 3.5" Exhaust w/Aero Turbine Muffler
    Hypermax Cowl Induction Air Intake
    Ride Rite Air Bags
    161K original miles

  6. #6
    NRA LIFE MEMBER sle2115's Avatar
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    Delo, my truck used some Rotella, doesn't Delo
    1987 F250 6.9 4X4 - ZF5 Trans, 3.73 Dana 60 Front/Ford 10.25 rear, Dual Rear Wheels, Carter P4594 electric fuel pump, Hydroboost, Restrictive air filter opened up, Firewall repair kit installed, new clutch, solid flywheel, m/cyl and pedal bracket, bushings etc.,7.3 fuel filter conversion, Solid state controller OEM (new controller and Motorcraft GP's), Headlights converted to relay system with 65/100 Watt Cold Ice bulbs, Class V Hitch (10,000lb WC/15,000lb WD), Air Horns, Cadet 7' X 9' flat dump bed, 5 ton grainmaster dump hoist.

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    Official GMM hand model icanfixall's Avatar
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    Delo 400 15w40 oil and no problems ever. I haven't run any of the others. Years ago before I knew there was diesel oil I ran whatever was on sale. It all ran fine and I got 285 or 385 thousands miles on that motor.
    89 SRW crewcab, Banks Sidewinder Turbo, 8 speed BTS E4OD with a Gear Vendors, Shifts smooth and positive with any load on it. Triple disc torque converter has 150 square inches of friction material, stock has just 25 square inches of material.Transcold Carrier pump helping out Moose Pump and just loven it. 4 inch Straight piped, hydroboost with a 1 5/16 inch master cylinder. 7.3 turbo upgraded motor, ported heads, intake & exhaust manifolds. ARP studs. Block sleeved on all 8. Mahle turbo pistons milled, are 24 to 26 thousands above the deck, then ceramic coated with Tech Line CBX. Line bored and balanced. Decked block. Each piston is 1/4 and 1/3rd gram of each others weight. "BB" injectors. Custom Rodney Red aluminum radiator and running cool. Now it needs my new Hypermax intercooler to help out the famous Moose Pump and a set of Moose Injecters thrown in just for giggles...Double FatMat inside of the crewcab... Nice and quiet too...

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    Where does Mobil Delvac 1300 Super 15W40 fit into this mix?

    The previous owner had put 240,000 miles on the motor with Delo 400. Now that I've got the truck, I found Delvac 1300 at a great price... Buy 1 Get 1 Free...$13/gallon regular price---> now becomes $6.50/gallon (Kragen Auto Parts). By comparison, the Delo400 runs just over $10/gallon (Costco).
    1989 F-350: CC, SRW, Long bed, 7.3L IDI, E4OD, 3.55, 2wd, XLT Lariat
    2002 VW Jetta Wagon: TDI, Auto w/ chip & nozzles
    2000 VW Golf: TDI, 5-speed swap w/ chip & nozzles
    1998 VW Beetle: TDI, w/chip & nozzles, 5-speed removed FOR SALE, please inquire

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    Diesel fuel abuser RLDSL's Avatar
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    My personal experience from years in a big truck on the road I found they all ate rotella at a faster rate than delo( I had one old Cat that would simply inhale rotella) turns out that later my observations were backed up by numerous independent volitility tests that showed rotella burning off at a faster rate than delo in the lab as well. Delvac fell somewhere in between

    Rotella has more detergents in it than the others do. The odd engine seems to like that, but usually only in colder climates, but in most cases, the thinned out oil just burns faster.
    '92 f350 cc dually, 5 sp+ 3 speed Spicer 5831 Brownie , Solid Flywheel & Kevlar Clutch, 7.3 ATS turbo, Hypermax Cowl Induction, Custom Aluminum Rodney Red Radiator,Evan's waterless coolant,Zero pressure system, MS Tech Fan Clutch, 16" & 10" electric pusher fans,Derale Electra-cool remote oil cooler, 4" exhaust,Dual Facet Duralift E-pumps, 150 Gallon bed tank from a Volvo semi, Amsoil bypass filter w/ Amsoil 15w-40 Diesel and Marine , Victor Reinz gaskets , Western Hauler bed, Warn M12000 winch, Per Lux fog Lights, Borgeson steering shaft, 1" hockey puck lift,Rear air conditioning, Air seat, Onboard air system with rear air bags with automatic level control,West coast mirrors, Bilsteins

    * Life is like a crap sandwich... The more bread you've got, the less crap you have to eat

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    The One Blue Thing ameristar1's Avatar
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    Quote Originally Posted by RLDSL View Post
    My personal experience from years in a big truck on the road I found they all ate rotella at a faster rate than delo( I had one old Cat that would simply inhale rotella) turns out that later my observations were backed up by numerous independent volitility tests that showed rotella burning off at a faster rate than delo in the lab as well. Delvac fell somewhere in between

    Rotella has more detergents in it than the others do. The odd engine seems to like that, but usually only in colder climates, but in most cases, the thinned out oil just burns faster.
    I can back you up on that. I ran Rotella and both trucks that I ran OTR with had consumption issues. Doped it up with either Pro Blend or Lucas and it helped out.

    I have heard nothing but good about Delo.

  11. #11
    hmmm? towcat's Avatar
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    guys-
    do keep in mind both formulations have drastically changed with the new oil specs. none of it is close to what it was 10 years ago.
    1992 F350 4x2 CC 7.3 ZF5 4.10LS DRW ATS(series 093) Intercooled & Hydrostop'd......the CSS "Nostromo"
    1988 F350 4x4 SC 7.3 ZF5, GV 4.10LS DRW D60/10.25...the T-ARS "Sulaco"
    1988 F250 4x4 SC 7.3 ZF5, 3.55LS SRW 10.25/D50.....the T-ARS "Brentwood"
    1985 F250 4x4 SC 6.9 T-19 4.10LS SRW D50/10.25rust-free unmodded truck the MSC "Oakley" FOR SALE
    1986 F350 4x4 RC 7.3 C6 4.10LS DRW D60/10.25Vulcan 876 Super Cradle
    1986 F350 4X4 RC 7.3 T-19 4.10 DRW D60/10.25 Vulcan 862 Wheel lift ARS "O'neil Forebay"
    1989 F450 4x2 RC 7.3 ZF5 5.13 D80 Century 17ft alu carrier
    1990 F450 4x2 RC 7.3 E4DOA 5.13 D80 Century 441xl wheel lift
    1985 GMC K2500 4x4 Suburban 6.5 turbo thm700 "Burb-O-matic"

    There are 3 kinds of people in this world.
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    The others, well......they just never learn.

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    Senior Member f-two-fiddy's Avatar
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    I dunno, My 85 eats delo at a 2:1 rate over Rotella.

    I think Ya run what got ya there.
    If the PO used Delo, Use Delo. If They used Rotella, use that.
    Rob

    85 F250 4X2- 6.9/C6/3.55 Damn near all rebuilt. To much to list * 93 F250 SCab 4X2-7.3/SidewinderII/ZF5/3.55 * 93 F150 4x4-5.0/AOD
    And a couple of Subaru Outback's

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    Dually driver 6.9 NapaBavarian's Avatar
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    It seems more important that you change your oil regularly and check it whenever you fuel up than what you use, that being said, in my cheapie beater car I made 2-3 oil changes with the cheapie "super tech" oil because...it was a beater, soon enough I got a fabulous rear main seal leak just a little drip, but I don't tolerate vehicles that pull that kind of stunt, good news is that 2000 miles on Rotella and some snake oil and that leak is going away or gone.
    Think outside the box? How could I think outside the box? I refuse to even acknowledge that there is a box!

    BW1356 or BW1345 Gear vendors feeler
    -4 door Bronco build
    -77 F250 stalled buildup
    -1984 Peugeot 505 STI diesel 5 speed
    -1985 crew cab dually 6.9 T19, smokey
    Now with more turbo, this really blows.
    -2006 Kubota L3830 1.8L 3 cylinder IDI diesel
    -2001 Chevy Duramax 4x4
    -1984 Chevy 6.2 parts truck for 1979 Cherokee
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  14. #14
    93 F-250 4X4 - 7.3 Diesel Max's Avatar
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    Quote Originally Posted by NapaBavarian View Post
    It seems more important that you change your oil regularly and check it whenever you fuel up than what you use, that being said, in my cheapie beater car I made 2-3 oil changes with the cheapie "super tech" oil because...it was a beater, soon enough I got a fabulous rear main seal leak just a little drip, but I don't tolerate vehicles that pull that kind of stunt, good news is that 2000 miles on Rotella and some snake oil and that leak is going away or gone.

    What kind of snake oil ?? Auto-Rx ???

    93 F250 Extended Cab 4X4
    7.3 Ford Factory Turbo
    4:10 limited Slip
    ZF5 Trans
    Banks Downpipe, 3.5" Exhaust w/Aero Turbine Muffler
    Hypermax Cowl Induction Air Intake
    Ride Rite Air Bags
    161K original miles

  15. #15
    Dually driver 6.9 NapaBavarian's Avatar
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    the stuff that claims to cure rear main seal leaks, this car has a rope seal, when the rain goes away I'll find the bottle
    Think outside the box? How could I think outside the box? I refuse to even acknowledge that there is a box!

    BW1356 or BW1345 Gear vendors feeler
    -4 door Bronco build
    -77 F250 stalled buildup
    -1984 Peugeot 505 STI diesel 5 speed
    -1985 crew cab dually 6.9 T19, smokey
    Now with more turbo, this really blows.
    -2006 Kubota L3830 1.8L 3 cylinder IDI diesel
    -2001 Chevy Duramax 4x4
    -1984 Chevy 6.2 parts truck for 1979 Cherokee
    -1983 GMC Jimmy 6.2 700r4 parts truck that stayed on for the ride
    -1982 300SD driver1983 300SD parts car

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