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I personally have not seen evidence of what BG and others alike claim. Throughout my journey, I've become skeptical of these engine oil cleaning additives such as BG and others. I know they're all popular, and many people told me do try them, and I did look into them heavily...but I just don't...

Yep I believe it! I know that -40 or -50 would be best...but it still needs some internal cleaning done, and the test results/ cleaning evidence that I've seen on Restore and Protect is impressive, and would probably be perfect for addressing the last few areas. Maybe I run R&P for a year or so...

Very good point! Will do thanks!

Thanks for reaching out. I have looked into this quite a bit and have come to the same/similar assessment you have experienced. Also, I should note that it's one thing for people to see a pic or video of sludge on the internet and claim "lack of oil changes"...but seeing the sludge in person and...

That makes total sense as you're more concerned with oil flow in the cold season. I would prob do the same if I were you. However, I'm more concerned about wear protection, oil pressure, and viscosity in the really hot summer months. I'm not concerned at all about the 5W part...just the -30...

Haha...yes unfortunately that was me. What do you mean by "unconcerned" given the level of sludge? The sludge is now gone. Sorry I'm just not understanding what you're trying to convey. Thanks!

Thanks for your kindness!

Agreed. I would love to run W-40 or W-50 year round...however I feel that I really need the Valvoline Restore and Protect's cleaning capabilities...for both the remaining pockets of sludge...and piston rings. This is why I'm debating/questioning whether I should alternate both.

No, I don’t know how long the previous owner went without an oil change. How is your truck reacting to the 5W-30? And what climate are you in?

Engine & timing components had only 65K miles on them. Timing components worked fine prior to tear down. Just had low oil pressure code..which led to the sludge discovery

What does sludge do to the chain?

Hello all, I have a 2015 F150 5.0 (Gen 2 coyote v8 engine) that I purchased not long ago. Very very long story short...I eventually found out that the engine was sludged. Extremely sludged. So I decided to dismantle the engine and clean it by hand, replace any parts needed, and reassemble it...