I wouldn't mainly because mine is pretty severe duty most of the time, lots of heavy towing, etc. I should probably get one of those tests though, if they're only $7. I'm curious now.

 

Lube Watch oil analysis for preventative maintenance- Chevron

Great way to find problems early like injector leaks, coolant, soot, silica, viscosity, etc.
Hijack over.

 

Dammit, I thought it was like a pregnancy test I could get at a local autopart store. Let my truck pee on the stick, and tell me if I should be worried...

 

This is all good information.
Thank-you all.
Keep it coming.

Almost all good information anyway...
Haha
DD

 

i have used royal purple 15-40 in my duramax for the last 175k mi.(281k total). I had the motor apart for 10 weeks and the oil still had everything coated. i kept wondering why my parts all looked dirty when another duramax i had tore down looked real clean and had been running rotella. I then realized that my royal purple had a coat on everything when the rotella had just run off. Thus, the royal purple prevents dry starts and i don't have to run an additive. As a side note the oil pressure has also increased approx. 10 psi.

 

I too run Royal Purple in bith my IDI and my Cummins trucks ..... I was genuinely amazed when I pulled the heads and hg off the ford .... SPOTLESS...... my oil pressure has also gotten better in both as well .

the ford has been running RP for 5 + years .... the dodge only about 3 months .... picked up milage on both

 

I use Mobil1 5 W 40 Fully Syn Turbo Diesel truck oil and Fleet Guard filters...I change it every 5000 miles...I had the waste oil tested along with a sample of the new oil the lab results were the same except for the suspended solids from the fuel and the soot...The oil is quite expensive but have you priced a new Cummins 6.7 lately...I'll continue spending the $100 on the 3 gallons of oil just for the piece of mind...

 

Funny you should post about the 5/40 ...... I have a few gallons for after my 12V HG job ... and thats what I plannedfor the ford too .....

should be iinteresting to see if I gain any mpg's there ....

 

Its been below 0° in the morning here in Maryland the past few days and the truck starts and runs like Its July...My truck is a 2009 but only has 30,000 miles on it...You will be amazed how well your truck will start in cold weather if you live in that climate...

 

Always good to see more Marylander's on here