Compression Ignition Addict
Join Date: Oct 2006
Location: Walpole, MA
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I am trying to determine what oil I should use. I live in DFW, TX so it gets pretty warm here. No real cold weather concerns here.
This last weekend I saw some Lucas Oil MAGNUM 15-40 for pre 2007 diesel engines. The truck stop wanted $25 per gallon but I found it online for $15.99 per gallon. I also saw a good deal @ Wally World for Roltella full syn 5-40 ($20 per gallon). They also had Motorcraft oil filters for 7.3 for $9...bonus!
I also thought about using the Lucas Oil HD Oil Stabilizer. When I was @ the International dealer today to pick up my Rotella HD ELC they were telling me a lot of the guys driving rigs use the Lucas HD Oil Stabilizer.
I noticed the 7.3 manual does not even mention 5-40 oil, rather 15-40 mainly.
Thoughts? What is everyone else running?
Lucas oil stabilizer is really nothing more than very heavy (Cst of over 120, 40 weight oil is 12-16) base stocks with nothing else in it. Unless your burning a lot of oil, it is a waste. The reason your 7.3 manual doesn't mention 5w40s is cause they were not a big factor in the diesel oil world until a few years ago. Your gotta remember your 7.3 manual is over 10 years old now, lots has changed.
Personally, I don't like anything Lucas... Forrest Lucas is a marketing genius and former trucker...not a chemist. For oil I stick to the major brands (Delo, Delvac, Rotella etc).
2002 F-350 4X4 ECLB 7.3 4R100 6637 filter w/ RiffRaff cover, 08 diff cover, 203* T-stat, HPX, Stancor Relay, 6.0 trans cooler, Zone leveling kit, 8'6" Western Ultramount
Sold: 04.5 Dodge Ram 2500 5.9 CTD, Reg Cab, 48re