when my brother had his old truck, i used to buy a little bit more oil then i needed everytime so over time ive collected alot of penzoil 5w30 synthetic. im due for a oil change pretty soon and just wondering if it will be safe to run 5w30? i have all thisoil, some still not even opened.i have 5w20 in there now, mobile 1. how is penzoil? im not f/i or anything and probly wont be for the next 3000 miles if that makes a difference. also what filter do you guys recomend? thanks

 

i will never run Pennzoil after i seen what the inside of a 351w looked like after it had a life of pennzoil. looked like straight mud. Don't know about their synthetic though,that was ol' dinosaur oil.

 

lol i know this is WAY off topic but...02whitegtvert..u do know that the pic in your sig, they are in a chevy right?

 

Yes you can run 5w30 and pennzoil platinum is actually quite good. I wouldnt touch there regular oil, but there synthetic is quite nice.

 

umm i had a choice to do this to. The person told me it would be fine and they had done it before. I still went with the 5W20 though

 

I use 10W 30 is that ok?

 

Just to answer the question: Yes, you can run 5w-30.


Pennzoil=[:'(]

 

why do you guys say penzoil is so bad? why is the other brand different? the only reason i will do this is because its free. if i would buy oil i would get mobile 1. maybe i will change my oil early if penzoil is "sooo bad"?? somone school me on oil please cuz i dont know that much about it.

 

you can run most wieghts of oil, 5w-20 is just what is recommended (it's what they use in the factory)
but running a different weight won't cause any harm to your engine

i use Castrol 10w-30 in my and she purrs like a kitten, never had a problem with it

 

As long as you keep oil in it, clean oil, your good to go!