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    Old CI-4plus and Ch-4 still good

    So I was digging in my shop and found 2gal of CH-4 and 3gal of CI-4 Delvac 1300 oil. Obviously it's been sitting there a while, but not more then 7years I don't think. Is the additives and detergents still good? I'll be using it in my 2006 Duramax that doesn't see much use. I think I was mixing...
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    I need an alternative for Calibration Fluid

    Im looking for an oil that I can put in a CP3(high pressure diesel fuel pump)during storage. I replaced my CP3 with a bigger one, but would like to hold on to my stock one. The shop that built my pump stores their pumps with CB fluid in them, but it cost $40+ a gal. Im not all that worried about...
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    UOA 06 Dmax @68K 25,000m on RTS 5-40 w/FS2500

    I didn't intend to go this long without a UOA, but... I haven't done anything to cause the copper to shoot up that I can think of. I had a small amount of sludge in my bypass filter canister. The oil looks good to me, but maybe 25K is to long on RTS. Thoughts? Link to my last UOA @ 16.5K the...
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    UOA 06 Dmax @68K 16,500m on RTS 5-40 w/FS2500

    I'm surprised there isn't more fuel in. Been making mostly short trips and have added a bit of fuel(tuning) to the truck. Thread from old sample Shell Rotella T 5W/40 (Syn) 2qt make up oil 16,500 Miles on the oil FS 2500 filter Ci-4 and Cj-4 mix We suggested 13K to 14K-miles for this oil...
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    UOA 06 Dmax @62K 11,500m on RTS 5-40 w/FS2500

    Here is my Used oil Analysis 11,500 miles on Rotella T syn 5-40 62K on the truck with the FS2500 bypass filter. The other UOAs in the pic where using Delo 400 15-40 not much of a change going to run RTS until 14K and do another UOA. I'm happy to see the Silicon down some I'm sure having 62K on...
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    Extending the change intervals of a FS2500? w/UOAs

    From looking at my UOA can I tell if I can extend the change intervals? If so what do I keep an eye on the Insolubles? I have always had my FS on my truck and never changed it without changing the oil even on the 15K UOA. Now I'm switching to SYN. oil and plan to extend my change intervals more...
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    06 GMC Dmax 2500HD @25K w/FS2500 bypass filter

    I didn't change filter or anything just took a sample because I want to get an idea how long the FS's filters would last. I will test it again soon with another 5K on the oil and filters since I put on 4K in the 2 weeks since the test and haven't got my next sample kit yet. I was hope by...
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    Diesel Lubricity/Additive Study Proposal

    A member over at Diesel Place wants to do a study on what additives do the best job at reducing wear look Here if you’re interested.
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