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I've searched and could not find an answer, so I thought I'd ask here due to the knowledge available. I've had a few dmaxs and they always have had very low iron numbers on UOA. Recently I had to repair a lower oil pan and was surprised to find a large round magnet inside. It had a little metal...

Good to see another LMM van still going strong. I have an 09' LMM van that I run oil field service in. Same story, on call 24/7 and need to get out and on the road ASAP. I'm currently at 232,000 miles and a little over 10,000hrs. It spends a lot of time idling. I mostly run Rotella 15/40 with M1...

My work vehicle is a 2009 2500 Express van with the LMM Dmax. I average 6,000-10,000 miles a month with lots of idle time. I've tried several oils from the cheapest to the most expensive with UOA. The cheapest oils reports looked the same wear wise as the expensive oils. I change my oil every...

I idle my 2009 Chevy Express 6.6 DMAX van at least 10hrs a day, every day. Running rigs in west Texas and New Mexico I keep it running non stop while I work. Just passed 19,000hrs on the motor and 232k miles, zero issues with the engine. It's sat on location idling a week straight, powering...

My 13' passat TDI SEL averaged 51-52mpg Hwy, but since the emissions update it's dropped to 38mpg at best and the oil reports show tons of aluminum now. In the last 15k miles it's went from not using oil to using 1qt every 1,000 miles or less. VW really ruined a good car, and now best they can...

Enjoy the good mileage of the 2.5 and buy a new Kia Stinger as the turbo car. ...

My work van is an 09’ Chevy Express 2500 with the DMAX. I average 11-12,000 miles and 500hrs between OCI. Lots of idle time, hard running towing 10k, and all in West Texas dust and heat. So far all UOA show almost zero wear.

I wouldn’t worry about bearing wear due to starts like that. Those HUI injectors use high pressure oil to pop them, so you must have oil flowing before it cranks anyway. Could be as simple as needing a glow plug change. My duramaxs and cummins Fire right up in the cold, but my IDI trucks need...

I was turning it to 4,800rpm, but doubt I’ll go over 4,000 now. Would like to keep the ability to play around a little. Lol.

I need to find a good oil for my 12v cummins. It’s fully built, 16:1 compression, roughly 65psi boost, 140# over stock valve springs with hardened pushrods. Originally built for a drag truck, now it’s in what I want to be a daily driver and tow vehicle. Turned the power down to about 550-600, so...

Originally Posted By: FlyNavyP3 Another awesome Duramax report, these have to be some of the lowest wear metal producing light duty diesels on the market. Report after report has been posted here with little or noting to see. Nice report. I've been hooked on Duramax diesels since driving one at...

Originally Posted By: dustyroads Ok, I can totally relate to the concern over the low oil pressure during a hot idle. My Cummins was the same (10-12 psi at hot idle) and only in the low to mid 30 psi at cruise speed. I guess that was one reason why I started using LOS in the first place. The...

Originally Posted By: dustyroads Don't forget the oil cooler. I'm sure you must have one and shouldn't see any excessive oil temps idling in high ambient temps. My trucks do get up around the normal operating oil temp when idling in 110-120f desert heat, but that's about it. Maybe your truck is...

Originally Posted By: SatinSilver Nice house you have there. I see the front gate and it appears the truck and the car are both white in color. Looks like mods have already been notified to delete your post with the personal info so that's good. That's the company owner address, feel free to...

Originally Posted By: userfriendly Here is one of my favorite synthetic vs conventional videos. https://www.youtube.com/watch?v=GYb_96D6GdA That's a poor example really. Those engines are easy on oil and 10,000hrs is just getting broke in. Doing oil changes at 600hrs on them is excessive...

The heat cycles have no ill affects on oil breakdown as long as the heat is within normal range. The accelerated wear on vehicles that are driven short trips is wear from so many cold starts. People still debate the amount, but it's pretty well agreed that 65-80% of an engines wear comes from...

I'm very happy overall with this UOA. I don't typically use oil stabilizer, but in west Texas heat and idling 10+ hrs a day I wanted to make sure the oil didn't get too thin when hot. The oil had 6,300 miles and almost 500hrs on it, Rotella T4 CK-4 with 1qr Shell X100 oil stabililizer.

Originally Posted By: DoubleWasp I have two clients who routinely squeeze 10,000 hours out of some very heavily used Cummins QSB 5.9 engines using Amsoil 12 TBN 15w40. At first glance you might think it an irrelevant comparison, but consider that marine 5.9's are turned up quite a bit from a...

Oil centrifuges are generic, only a couple people make them and everyone relabeles them. The ONLY difference in ones they claim are made for wvo vs motor oil is the spring and little piston in them. It's to help save your engine if oil psi gets low, it needs at least 20psi to start flowing oil...

Rotella T6 all day!!! Every LS builder I know trusts their valve trains and cams to Rotella. It's never let me down no matter how hard I've beaten or boosted a motor.