[bumpin_blazer]

Will 5w-30 oil hurt the 6s 3.0L engine that is stated to be used with 5w-20 oil? I only ask as my bud has 6 quarts left over unused that he'll give me for free and well, free beats 65 bucks lol. So if 5w-30 won't hurt my engine even in Tx i'll just use that and save my $ for clear side markers .

 

[fullmetal6]

Um... What was the question?

NO it wont hurt it. Why would it?

 

[bumpin_blazer]

sorry i'm so freaking tired that my post made almost no sense lol. i was asking if using 5w-30 instead of the 5w-20 the manual and oil cap call for would hurt the engine in Tx heat. I mean i highly doubted it would but wanted to make sure before i did it.

 

[Jax6S]

No it doesn't hurt the engine. You might see a slight drop in fuel economy (1 mpg) but that's about it.

 

[Sacramento6]

No it doesn't hurt the engine. You might see a slight drop in fuel economy (1 mpg) but that's about it.
[/b]

That's exactly what I noticed when I did it. I'm back in 5-20 now that I could find it in Pennzoil Plat.

 

[murago]

That's exactly what I noticed when I did it. I'm back in 5-20 now that I could find it in Pennzoil Plat.
[/b]

To explain multi-weight oil ratings- the number with the "W" is the winter or cold rating, the 2nd numbeer is its flow when warm. The higher the number, the slower it flows (viscosity). The 5W-30 will be somewhat heavier than a 5W-20 when warm which can increase the resistance on moving parts-this the decrease of fuel economy. You can look up more info at any of the oil websites for more info.

 

[bumpin_blazer]

hey i went from my r/t that was getting about 10 city/12 highway due to the power i added so the 22 down to 20-21 i'll get in my 6 is fine by me. figure that 1mpg will take quite a bit of time to justify the 65-70 bucks it is for synthetic oil.

 

[djquik1]

It shouldn't hurt anything.I screwed up and put 5w30 in mine once by grabbing the wrong bottles off the shelf at work and dropped 1-2 mpg avg for the 3000 miles other than that it wasn't harmful