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I want to run a 5w40 oil in my new Chevy Colorado 2.8 DuraMax. Most Dexos2 oils are 5w30. 5w40 Dexos2/C3 oils include: Redline Euro 5w40 Motul X-Clean 5w40 Castrol Euro 5w40 Is any one of these better than the others?

I recently purchased a 1974 Plymouth Duster 318 V8 Auto. It has only 11,000 original miles on the car and engine. I was thinking I would run Rotella T6 5w40. Any better suggestions? BTW: The owner's manual recommends anything from 5w20 to 20w50 depending on average ambient temperatures.

I have several RP 20-820 filters that I bought 35% off from AAP. In looking down the center of these I noticed that the bypass valves for several of them are off center. Just wondering if this is an issue. Photo below shows one with the valve centered within the spring: Next photo shows one...

Filter was Napa Gold 7899 Blackstone Comments: This sample from your Challenger has some high copper, but that's not too unusual for a relatively new engine like this. Copper is from brass/bronze parts, and it's often the highest metal during wear-in of the new engine, since those parts don't...

OLM was at 19%. Filter was NAPA Gold 7060. Blackstone Comments: Copper improved this time, but lead is going the other way. Lead might be a sign of bearing wear, so it's an important one to watch, but there's still a chance that the lead in your system is just coming from the new radiator you...

This is a Napa Gold 7060 filter run on my 2008 Silverado 6.0L VortecMAX for 9,083 miles.

This is a Napa Gold 7899 that was installed on my 2013 Challenger R/T 5.7L Hemi on 3/31/2014. It was run for 4678 miles.

So according to the following NAPA memo from 2008: NAPA memo NAPA makes separate filters for Chrysler and Ford applications due to the different pitch of the 22mm threads on the Chrysler engines. So why then do other manufacturers specify the same filter for both Chrysler and Ford...

OLM was at 19%. Filter was NAPA Gold 7060. Filter dissection is here. For those unfamiliar with the L76 V8, it is the same 6.0L aluminum block V8 used in the Pontiac G8 GT. Blackstone Comments: Thanks for the notes on the new radiator with an integrated oil cooler. That could be why copper...

Just wondering. I popped a sample in the mail to Blackstone two weeks ago and haven't heard back yet.

This NAPA Gold 7060 filter was purchased about 5 years ago from Fleet Filter. Notice it has a white can, thread-end bypass, and nitrile ADBV. It was the last one in my stash. The new one I replaced it with is in a black can with a dome-end bypass and a silicone ADBV. This is from my 2008 Chevy...

About 8,000 miles on this filter from my 2008 Silverado 6.0L L76 V8. No tears.

About 5,000 miles on this filter from my 2013 Challenger 5.7L HEMI. No tears.

I just saw four 5qt jugs of Penn Ultra 5w30 on the shelf at the Bedford, VA Walmart.

Based on the article from Baldwin Filters at the link below, which states that Beta Ratios can be expressed as Bx=nn (where x is the particle size in microns and nn is the efficiency), how should I then interpret Wix' published Beta spec of B2=20 for the 51372XP filters I just purchased? Would...

Recently bought 6 Wix XP filters but now hesitant to use them because, according to this place, they couldn't filter sand. Can't go back to my usual Bosch D+ because everything made by Purolator will get a tear. Intrigued by the Fram Ultra except for the YouTube video showing one that failed...

Yesterday I drained the Pennzoil Platinum 5w-30 from my 2008 Chevy Silverado (6.0L L76 engine) and I refilled with the new Pennzoil Ultra 5w-30. I've noticed a couple of things regarding oil pressure with the Ultra. 1. The hycraulic lifters pump up faster with the Ultra. The lifter "tick"...

Doesn't get any better than this. Previous run was also RTS 5w-40. Black Roki filter was used this time. Wix was used previously.

Surprisingly, this oil did pretty much exactly the same as the PP 5w-30 which was run previously. The VQ40DE sounds better and runs smoother on the GC. Mileage with the GC is slightly less than with the PP 5w-30. I will probably go back to the PP on this vehicle. Judging by the TBN, I could...

RTS 5w-40 seems to do very well in this engine. I'll be doing 7,500 mile OCIs while it's under warranty. I'm getting about 31 mpg highway with this oil. The car is rated at 26 mpg highway, so I'm very pleased. BTW: I drive this car like I stole it most of the time. Filter is a NAPA Gold.