Recent content by Last_Z

Hello everyone, I did a follow-up UOA on my truck last month. Here are some notes for you to consider: - UOA length: 7090 miles (took the oil life monitor down to 6%). 29,583 miles overall. - Oil is Quaker State Ultimate Durability 5W-30. I went up in grade anticipating oil dilution. - M1 oil...

Team, I understand your concerns about the t-stat and the K&N system; however, the data does not support your arguments. At least not at this time. I lived in Florida before moving to New Mexico. Both are nearly extreme hot weather climates. I currently have the truck tuned to 91-93 octane...

Funny you mentioned PP 5W-30. I used its cousin for this interval....QS Ultimate Durability 5W-30 with the expectation it would thin out some. ...

Team, First oil analysis I post here in more than 13 years. - 2018 Silverado 1500, Crew Cab, Z71 with the 5.3L (L83) engine - No idea what oil the dealer used, but should be 0W-20/Dexos 1 as recommended - 5200 miles on the oil...21,520 overall - First 3K miles was mostly long trips visiting...

Because Dexos (GM's own oil) is a blend. Also, because I've run MC blend in a turbo engine and it produced great results. MC has been proven to be an outstanding oil.

Whoa...slow down guys! Only the oil...not the filter!! You think I'm trying to get my butt kicked by Vette fanatics? The oil will be in the future...it isn't in yet. If it even happens.

I decided to go with the longer PL22500. That and QS Ultimate Durability. The filter does hang a bit lower by about 1/2", but I should be ok. I barely drive the car anyway. Thanks for the help guys. By the way, the next fill will be with Motorcraft 5W-30 blend.

Originally Posted By: Last_Z Guys, Does this Dexos oil meet Corvette 4718M? I assume this is a synthetic blend GM is now using on everything, including Vettes and Caddies? Just wondering if MC 5W-30 is a better oil and/or value than this. (oh yeah, I own a Vette...and yeah, I know you know...

The longer filter is just over 1/2" longer, according to Purolator's website. I'll keep that in mind.

Thank you, Sir. You truly are a beast when it comes to useful info!

Guys, Is there a "longer" PureOne oil filter for my car? See sig for info. Thank you all!

Guys, Does this Dexos oil meet Corvette 4718M? I assume this is a synthetic blend GM is now using on everything, including Vettes and Caddies? Just wondering if MC 5W-30 is a better oil and/or value than this. (oh yeah, I own a Vette...and yeah, I know you know what I'm thinking!) Thanks!

Well, he has 10k miles on it with the last 4500 miles on this run of RP. That means he already had 5500 miles prior to ever using RP after the rebuild. He said he used dino to break in the engine. I doubt he ran the dino oil for all those 5500 miles. This run with RP is likely his 3rd OCI on the...

Originally Posted By: FZ1 Dump the oil. Drain and fill the radiator with some "real" coolant. Run the next fill 3k. Check it to see if it improves. +1 Dump the oil and refill with fresh lube. Dump the water and refill with dex-cool...you are going to do some heavy damage in a years time. If...

I say this is a dirt problem. Check your air filtration system. All metals are sky high; a strong indicative of filtration problems. Was this engine drag raced or otherwise heavily abused? What's your air filtering system comprised of? I would stop driving this car ASAP until I figure out what...