mobil 5w40 truck and suv oil!
#41
Tech Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by 99camarols1m6
these are the oils higher than a 30 weight i have to choose from where i can get real cheap or free, what would you suggest: Amsoil 15W-40, Mobil 0W-40, Mobil 5W-40, Mobil 15W-50, and Penzoil 5W-40. (all full synthetic)
IMHO 15W-50 is far too thick. it's going to protect you very poorly during startup, cut your fuel economy and take away significant horsepower.
#42
TECH Enthusiast
iTrader: (10)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
you guys can hate all you want, You guys can use what ever oil you want. All I know is that I have been using regular old 10w-30 bulk oil in my 01 ws6 for 2 years now, no buring no consumption and no tick. It just sickens me to think that people think they are going to be faster with different oils.
#43
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by 99camarols1m6
these are the oils higher than a 30 weight i have to choose from where i can get real cheap or free, what would you suggest: Amsoil 15W-40, Mobil 0W-40, Mobil 5W-40, Mobil 15W-50, and Penzoil 5W-40. (all full synthetic)
#44
Staging Lane
Join Date: Jan 2006
Location: Frankfort, Kentucky
Posts: 85
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by 99camarols1m6
What about penzoil platinum (full synthetic) 5W-40 european blend, how does this compare to mobil 5W-40 and GC 0W-30. I am curious because they stock it where I work (and I can... ya know have one accidentally fall into my car
)
![Secret](https://ls1tech.com/forums/images/smilies3/secret2.gif)
#45
Pontiacerator
iTrader: (12)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
There was a thread on BITOG a year or two a go in which a GM engineer explained why synthetics were unnecessary for 99% of drivers. He pissed a lot of people off but it was hard to argue with his expertise. That being said, I use GC because here in Kansas, it can get down to 0* in the winter, and 100* days are common in summer. GC has great cold flow characteristics and maintains excellent oil pressure when it's really hot.
#46
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by o2man98
IMO you should also add AMSOIL European 5w-40 to the list above. It has shown some good results in the LS1's. All the oils listed will be good however.
#48
Tech Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Eatinstang4life
you guys can hate all you want, You guys can use what ever oil you want. All I know is that I have been using regular old 10w-30 bulk oil in my 01 ws6 for 2 years now, no buring no consumption and no tick. It just sickens me to think that people think they are going to be faster with different oils.
#49
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Eatinstang4life
Dude just use regular freakin 10w-30 oil. oil is oil for god sakes.
uh no I can tell you your wrong I have worked in the oil industry for about 5 years and I can tell you there is differences in waits and viscosities obviously but dont waist money on synthitics please, just change your oil every couple thousand miles with the cheap stuff 10w-30 is not too thin at all for ls1's just right. They call for 5w-30 anyways.
you guys can hate all you want, You guys can use what ever oil you want. All I know is that I have been using regular old 10w-30 bulk oil in my 01 ws6 for 2 years now, no buring no consumption and no tick. It just sickens me to think that people think they are going to be faster with different oils.
uh no I can tell you your wrong I have worked in the oil industry for about 5 years and I can tell you there is differences in waits and viscosities obviously but dont waist money on synthitics please, just change your oil every couple thousand miles with the cheap stuff 10w-30 is not too thin at all for ls1's just right. They call for 5w-30 anyways.
you guys can hate all you want, You guys can use what ever oil you want. All I know is that I have been using regular old 10w-30 bulk oil in my 01 ws6 for 2 years now, no buring no consumption and no tick. It just sickens me to think that people think they are going to be faster with different oils.
2) You work in the oil industry, likely sweeping floors at a plant, because your education sucks. This is shown by your obvious lack of spelling knowledge.
3) You don't even know what kind of headers are on your car.
4) http://www.bobistheoilguy.com
5) How many oil analysis' have you sent your oil in for?
6) Who said anything about being faster? I want the best oil for protection.. you know, the oil that shows the least damage on a standard bearing crush test.
7) It sickens me to think that some people can still say "oil is oil".
#50
Tech Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by TORCHD 02 TA
i might have to try the M1 0W40.. but isnt that thiner than M1 5W30??
the GC 0W-30 tends to be noisey and startup. my piston slap is pretty noticable during startup idling since the oil at that point is water thin. however, as soon as my engine warms up, it mostly goes away. my engine's valvetrain noise never completely goes away, but since it's common with LS1's i'm not too worried. it's still relatively quiet. you can only really hear it if you're focusing on it.
#51
TECH Senior Member
iTrader: (39)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by ChocoTaco369
no. 0W-40 is great because it's thinner at startup so it gets to parts quickly. startup is the most dangerous part of an engine's life because during startup, there is no fresh oil being pumped through the engine since oil doesn't start pumping until the key is turned, so for that split second, it's the driest environment for an engine. the very thin 0W-40 gets to all the parts much quicker than 5W-30, giving superior startup protection. once the engine warms up, however, the 0W-40 is thicker than the 5W-30, better lubricating parts.
the GC 0W-30 tends to be noisey and startup. my piston slap is pretty noticable during startup idling since the oil at that point is water thin. however, as soon as my engine warms up, it mostly goes away. my engine's valvetrain noise never completely goes away, but since it's common with LS1's i'm not too worried. it's still relatively quiet. you can only really hear it if you're focusing on it.
the GC 0W-30 tends to be noisey and startup. my piston slap is pretty noticable during startup idling since the oil at that point is water thin. however, as soon as my engine warms up, it mostly goes away. my engine's valvetrain noise never completely goes away, but since it's common with LS1's i'm not too worried. it's still relatively quiet. you can only really hear it if you're focusing on it.
yup i know what you are talkign about.. on startup you can hear the piston slap.. but once it warms up, unless you listen for it, it is not there. so you do recommend 0w40.. What else. i am also running the K&N Oil Filter
#52
Tech Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by TORCHD 02 TA
yup i know what you are talkign about.. on startup you can hear the piston slap.. but once it warms up, unless you listen for it, it is not there. so you do recommend 0w40.. What else. i am also running the K&N Oil Filter
the K&N filter is supposed to be a good one. right now, i'm running the napa gold (wix) filter. no complaints. reason why i run the napa gold is apparently it has even better filtering capabilities (with the expense of a little flow) and is $3 cheaper which is always nice.
#53
11 Second Club
iTrader: (27)
Join Date: May 2002
Location: East Palestine, OH - USA
Posts: 2,397
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by ChocoTaco369
IMHO 15W-50 is far too thick. it's going to protect you very poorly during startup, cut your fuel economy and take away significant horsepower.