Your engine knock with certain oil brands?

[01loadedLE]

Ive been switching between havoline 5w30 reg and pennzoil 5w30 reg. Ive noticed the engine knocks with the pennzoil and not with the havoline. The knocking is not bad enough for concern since its light and usually goes away after the engine is warmed up. Its just annoying to hear so Ive decided to stay with havoline.

What oils have you noticed more engine noise with?

[ShwRolla]

hhmmmm....i use castrol full synthetic

[JDM_jody]

haha, thats because PENNZIOL has wax in it lil buddy.
why it stops after warm up.
Thats something they dont mention in the commercials. lol

[tenkuunokage]

running synthetic. Runs chill. If I dont use synthetic it knocks and burns oil fast.

[PhatRoyale]

Try a thicker grade of oil and see if that helps. Castrol GTX is also another good conventional oil to use.

[01loadedLE]

Originally Posted by tenkuunokage

running synthetic. Runs chill. If I dont use synthetic it knocks and burns oil fast.

What grade do you use? Does it burn just a little now or none at all?

Btw just to be clear I dont believe pennzoil has wax in it. Some info I found about it: With todays oils having to met GF-4 API-SM specs, I doubt any dino lube has wax in it, as it wouldn't meet the specs. Most dino oils are at least Hydo-Cracked, to eliminate wax, & some are Hydro finished, so it doesn't make sense for them to add something that they are trying to remove & would make it more difficult to meet those specs.

The word paraffin is a very common and basic term for base mineral oil. The MSDS sheets for many motor oils use the word paraffin to describe the main oil ingredient...as in "SOLVENT-DEWAXED HEAVY PARAFFINIC PETROLEUM," which is how Valvoline phrases it in their MSDS sheets. Paraffin is the proper organic chemistry word for aliphatic hydrocarbons...more commonly known as oil. It is also the correct name for wax and candles. But there is as much difference between paraffin wax and paraffin oil as there is between a chestnut horse and a horse chestnut. They just aint the same thing. Doesn't matter whether you're talking about Pennzoil, Castrol, Valvoline, Havoline, or any other oil. If it is oil, it likely contains paraffin, but not the kind used in candles.

[JDM_jody]

^^ hmm, thats interesting. But i should show you this tahoe that guy used only penzoil.
W could see the lil wax throughout the block when took it apart. wish had pix..but this 2 years ago. mite have changed.
just my experience =]

[fishexpo101]

Be interesting to see if the increase or reduction of knocking coincides with an increase or decrease in oil pressure with those oils. I have an older gauge that doesn't have nearly enough resolution to make a good comparison - but I can track it via overal fuel economy.

I've noticed that running Pennzoil Platinum or Valvoline Synpower - the engine "sounds" quieter than when running with Mobil 1. But overall mileage really tanks with Pennzoil - even after several crankcases of the stuff and enough time on the oil. I always average about 13-15% less fuel economy with PP 5W-30 vs Mobil 1 5W-30. Switching to Valvoline, it only drops a few percent compared to Mobil 1. If anyone asks - I've pulled UOAs with them all - wear over my typical 7500-8500 mile OCI shows they all protect the engine, wear materials are nearly identical across the board. But the oils do shear down differently - Mobil 1 starts a little thinner than the others (low side of a 5W-30 viscosity), and will shear down more quickly over the same period of time. Pennzoil is much thicker (high side of a 5W-30 viscosity) and takes more to shear down - Valvoline is right in between.

[01loadedLE]

Yep. Some people on bitog have said they hear it after startup with certain oil filters too. From what I saw on bitog the old havoline 5w30 was thinner than most other brands and would shear down to 5w20 which is what made me like it. The new formula is thicker if I remember right.

Wow 13-15% mileage difference between those brands in the same grade is rare from what I remember with other people's experiences on bitog. The only times I remember seeing people with such big differences was between grades and/or switching from reg to synth. I havent seen any difference in mileage between the 5w30 oils Ive used.

[fishexpo101]

Yeah, I was surprised as well - but I saw the numbers right after running PP compared to Mobil 1. You can visually and audibly tell that is seems "thicker" than Mobil 1. Even driving on the oil and letting the miles roll on, the oil is still thicker. UOAs are all clean - nothing significantly different between them - but just could be a well wearing motor. Like they say, YMMV.

Funny thing is the Matrix doesn't like PP at all - it actually gets worse numbers than the Corolla - rev's slowly, big drop in fuel economy, seems to be weaker (overall performance). Not just me - as my wife will drive it and see the same things - she has no idea what oil is in it at the time. So I just feed the Matrix Mobil 1, Mobil 1 EP, and Valvoline Synpower - all 5W-30. Maybe the interaction between the oil and fuel - as the Matrix tends to get quite of bit of fuel dilution, compared to the Corolla - will shear the oil down very quickly. So I've dropped its OCI to every 5K to be on the safe side.

[JDM_jody]

so my twin came over today and her shyt is knocking like hell!!
sux our cars piston&ring design are retarded! oil burning cause me replace my pistons and rods after blowing engine @fter 3,400 mi oil change. grr

now my twin mite need pistons too. hasnt change oil over 4,100.
Good thing is, I have more 11:1 pistons in my garage
hello premium fuel. hehe

[01loadedLE]

Originally Posted by fishexpo101

Yeah, I was surprised as well - but I saw the numbers right after running PP compared to Mobil 1. You can visually and audibly tell that is seems "thicker" than Mobil 1. Even driving on the oil and letting the miles roll on, the oil is still thicker. UOAs are all clean - nothing significantly different between them - but just could be a well wearing motor. Like they say, YMMV.

Funny thing is the Matrix doesn't like PP at all - it actually gets worse numbers than the Corolla - rev's slowly, big drop in fuel economy, seems to be weaker (overall performance). Not just me - as my wife will drive it and see the same things - she has no idea what oil is in it at the time. So I just feed the Matrix Mobil 1, Mobil 1 EP, and Valvoline Synpower - all 5W-30. Maybe the interaction between the oil and fuel - as the Matrix tends to get quite of bit of fuel dilution, compared to the Corolla - will shear the oil down very quickly. So I've dropped its OCI to every 5K to be on the safe side.

I cant remember, do your cars burn oil? Interesting how the matrix performs so bad on the pennz.

Im lost with YMMV. My best shot is 'year model makes vehicle'. Anywhere close?

You ever try havoline? A lot of people on bitog dont like the new hav formula with its different additives than before since the previous formula did so well. The "if its not broke dont fix it" way of thinking. Some have said their engines dont like it as well as the old formula. I havent been able to tell a difference between the two so Im good.

[DanGouge]

Originally Posted by 01loadedLE

Im lost with YMMV. My best shot is 'year model makes vehicle'. Anywhere close?

YMMV = Your mileage may vary.

[01loadedLE]

Thanks dan. I recognize that now from times before, I had forgotten it. I figured I wasnt anywhere near close hence the laugh. Turns out I sure was right. Maybe I'll remember it from now on, maybe not. Killer ADD. lol

[Vicman17]

That's funny. Of all retail synthetic oil brands I tried on the Corolla, the one with the least amount of valve-chatter was Pennzoil Platinum full-synthetic.

I found the idling and revving up smoother on PP than when it was on M1 or Castrol Syntec 5w30.

The knocking I can remember, but disappeared when I switched to Shell Silver (Mid-Grade 89) fuel.