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Motor is a 2004 Cummins ISX15.Wanting to increase oil pressure a little bit.Which would be the better choice? Oil changes would $246 with Rotella and $270 with Mystik.

Without oil samples what’s a good oci for a 2022 Ford expedition using Mobil 1?

Wondering if anyone has used this oil before? https://majesticlubricants.com/20w-50-synthetic-blend-heavy-duty-motor-oil/

Are there any good oil thickeners for semi truck oil ?

I’m looking for different brands of filters to run on my 04’ isx15.Oil and fuel filters get changed at 10k.Was thinking of going with Napa filters since they are down the road from me or I could order from fleetfilter as well.Not sure on their quality since they got purchased by Mann and Hummel...

Hi.Looking to switch to the Mystik 15w50 because my 03’ Cummins ISX15 is getting up there in miles and I want a heavier oil to keep the oil pressure up and consumption down as it wears.Is that oil a good choice?

Anyone used this grease with good results? I see that it has a Timken 55lb rating.Was actually going to try the JT6 but TSC didn’t have any so I ended up with this one.Don’t want to spend a whole lot on grease nor extend the time between greasing because it gives me a chance to actually get down...

Hello.Is there any advantage to running one or the other on an ISX 15?

Looking at the Sinopec 15w40 conventional for our fleet of semi trucks and wanted to see if anyone has any experience with this oil and if it’s worth buying for our fleet? TIA

I purchased 15 gallons for my 2004 Cummins ISX.Is this oil any good or should I have stuck with the big three?

Want to know if SuperTech 15w40 Is a good oil for a 2003 Cummins ISX? OCI’s done at 10k.

So which type of fluid would be best in the diffs and trans of my semi truck? I hear from some people on a big rig forum that synthetic is a waste in the trans and diffs.

What would be a reasonable number of miles or hours for OCI’s on my truck? I I use 15w40 and Baldwin or Fleetguard filters.

Is Traveller 15w40 a good choice for my 2004 Cummins ISX CM870? It has 450k miles and is new to me.I’m thinking of doing 10-12k OCI’s.Oil filter is a BD7154.

Hello.I have a 40 foot gooseneck with 2 10k axles that are oil bath.I run Mobil 1 80w90 in them.Problem is that the seal blows out on them every 20-30k miles ruining the shoes and sometimes the magnet as well.Dexter shoes are $100,magnet $63,and seal $29 so it adds up since I run 1500-2000 miles...

Does anyone know the oil change interval for a 2006 caterpillar c15 engine? The truck probably falls under severe duty.High temperatures in the summer and -20 in the winter,lots of idling,hauls 110,000lbs full time,dusty roads.thanks.

Looking for specs on 2017 powerstroke fuel filter.

Recently traded in my 13’ Duramax with 307,000 trouble free heavy hauling miles for a 17’ Powerstroke.From what I am reading in the owners manual I fall in Severe duty maintenance and am wondering what oil grade I should use that meets the ford WSS-M2C171-F1 oil spec? I use my truck strictly for...

Hi.I am debating purchasing Phillips 66 Dexron VI for my 2013 Duramax with Allison transmission.I have ran Dex VI for 250,000 miles so far and my intervals fall under Severe 45,000 miles since the truck is used for hauling.My choices are whatever licensed big name Dex VI is on the shelf or the...

Hi,all I'm a long time follower of BITOG,but never have created an account.I have a 2013 DRW Duramax which is used as a full time Hotshot hauler,hauling loads of up to 36 GCVWR.I purchased the truck with 10 miles and have always changed the oil per DIC,which came out to something like 7k...