Originally Posted By: OVERKILL
Originally Posted By: DustyBones
I can understand why the OP wants the split. I grew up on pennzoil and Castrol. When I got my own ride it was Castrol from day one, it still is. No need to change because it has run perfect in everything I have had.
Then one day the wife says she will pick up oil for me. She knows what to get but M1 was onsale. So I poured it in. First start the car ran a tad rough and ticked. The wife said after it warmed up it was worse. So I dumped it out and put GTX back in it. Ran perfectly smooth with no noise again. Now I run CHM in her car, same story, runs smooth for the entire 7500 mile OCI. Back in 09 in the PacNW there was no 5w30 in any brand, nothing, but plenty of 5w20 everywhere in every brand, so GTX 5w20 went in. Ran just as good as the 5w30 for 7500 miles. But that M1 5w30 was just horrible.
My brother buys into all the hype. Ran M1 in a malibu with a 5.3 in it, it clicked and clacked, ran a Equinox he had with M1 and it was a clicking clacking monster. Now he has a 3.5 Eco Boost F150. Ran M1 in that aswell and the noise was terrible, sounded like it was gonna fall apart. Then one day he has turbo problems and 2 months later he has all new everything under warranty replaced and ford gave him a forever service plan as a we are sorry it blew up. Now it has Motor Craft syn blend 5w30 in it and the flipping thing is smooth as can be. He says it is the new rebuilt motor, Im not buying it. His motor runs so flipping quiet now it is very noticeable.
Divorce that oil. Everyone complains about it, especially if you ride a Harley, I can pick out right away the guys who run it by the top end noise. No way I will ever buy it on purpose and I would rather run CHM 10,000 miles and wait for more to get in stock before I ran it. The old oil with 7500 on it will run more smooth.
I got my 01 3.0 Vulcan powered Ranger at the start of the year and it had 5w20 in it, dude I bought it from works at a quick lube. Ran fine on it, till the day I put that truck to work after I fixed some minor issues. That light oil was toast in 2,000 miles. It does not hold up well to hauling and towing (in that motor) at all. I believed my experience in the car would prove it to be fine. Not in a hard worked motor, maybe if it was a point a to point b truck and only ever hauled a pack of smokes and a monster, but I work it. Filled it with CHM 10w30 and with 3,000 miles on the current oil it is not as burnt up as the 5w20 was and I have worked it harder with this oil change than what came in it.
Bottom line is you have to match the oil to the application. In my case M1 did bad in a car that is easy on oil and light viscosity oil in the truck is bad for working it hard every day it sees pavement.
What I dont get after lurking here for years is how everyone defends M1 when people try the koolaid. It uses oil, car never used a drop before, it runs hotter, turns black super fast, motoer runs rough on it, motor sounds like spoons bouncing around the oil pan and valve cover. Then the fanbois pipe up, run it a few OCIs, you get used to the noise, you get used to the consumption. I can only imagine if the coin were reversed and everyone who used M1 forever switched to Castrol and said it uses oil, runs rough, sounds terrible, no oil on dip stick after 3,000 miles. Yall would open the gates of the hate machine right quick.
So the OP noticed what everyone does who tries the koolaid, its no big deal, better oils are out there. Pick one, just dont go back to paying for a mediocre oil and paying a bunch for advertising. Too easy.
Castrol:
Mobil 1:
I could of course put some context and history to the pictures but why bother if we are just tossing out hyperbole and conjecture eh?
I've torn down a number of engines run on Mobil 1, they all were spotless. I've also NEVER had an engine noisier with M1, and that's probably 30+ engines to your three. The 302 in the first set of Mobil 1 pictures has 338,000Km on it, has ZERO bore wear (visible cross hatching still in the bores), factory compression, zero consumption and makes 100+HP more than stock. THAT engine, along with our 425HP built 312 Interceptor were the two engines that proved to me that the product performed.
Oh, and we ran this engine on Mobil 1 too (the 0w-40):
It came apart (again) to get the link-bar lifters installed.
I'm sure GTX is a fine oil (my grandfather used it and VWB because he got it on sale by the case.... It was never any more or less quiet than M1 in the same engine BTW) but some of the anecdotes tossed around here are utterly ridiculous.
Thanks for putting these pics on here. I've used Mobil 1 in everything for years and have had the same experiences you point out. Never had excess engine noise and have used it in 2 Harleys and 2 [censored] bikes. It quiets the Harleys down and the syn gear oil makes their trans shift slick as snot. I use it in my Mercedes diesel with 77k miles and 10k oci and the cam, chain and gears are spotless. What more can you ask from an oil.
