Recommended oil for the 3.4L V6

[kyrin]

I've always used Castrol/Mobil-1 synthetic never had any issues

 

[19963.4lsr5]

None.
20w-50 is too heavy for our 3.4L. This would cause deminished gas mileage too.
Who am I to say what's right or wrong. Run what you see fit, it's your truck.

Not to mention starving the topend of oil possibly.


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[Endlessblockades]

So, here we are in 2020 and I'm about to use switch up to synthetic. The previous owner used full dinosaur up til now. I have replaced the valve cover gaskets, so what's there to lose?

 

[plcfcng]

Nothing to loose go for I use Castrol Full Syn. I have a question did you reseal the half moons when you did the Valve cover gaskets.:art:

 

[Biogenic]

I’m about to try Kirkland 5-30 synthetic with oem filter


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[Endlessblockades]

Nothing to loose go for I use Castrol Full Syn. I have a question did you reseal the half moons when you did the Valve cover gaskets.:art:

I was too ignorant to do that, I'm afraid.

 

[plcfcng]

I was too ignorant to do that, I'm afraid.

If you end up with oil leaks near the head look for the half moons. A re do on
valve covers is not the hardest thing to do you know how as you have done it already. If they don't leak just let them be.:bravo:

 

[datsuyama]

None.
20w-50 is too heavy for our 3.4L. This would cause deminished gas mileage too.
Who am I to say what's right or wrong. Run what you see fit, it's your truck.

Cool, thanks man... I just was like :shrug: when I saw that sticker and thought there just *might* be a reason for it that I was unaware of but it seemed too damn thick to me!!

Thanks again!

 

[datsuyama]

Not to mention starving the topend of oil possibly.


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Cool, thank you. Coming oil change, back to 5-20 it is!!

 

[19963.4lsr5]

Cool, thank you. Coming oil change, back to 5-20 it is!!

No, 5w30 or 10w30 or 5w40.

5w20 is too thin.


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[Frank4Run]

If you will look into 2002 T4R owner's manual (last year of 3rd gen) on the page #264 you will find next:
SAE 5W−30 is the best choice for your vehicle, for good fuel economy and good starting in cold weather. If you use SAE 10W−30 engine oil inextremely low temperatures, the enginemay become difficult to start, so SAE5W−30 engine oil is recommended.

 

[datsuyama]

If you will look into 2002 T4R owner's manual (last year of 3rd gen) on the page #264 you will find next:
SAE 5W−30 is the best choice for your vehicle, for good fuel economy and good starting in cold weather. If you use SAE 10W−30 engine oil inextremely low temperatures, the enginemay become difficult to start, so SAE5W−30 engine oil is recommended.

Gotcha, thank you! I'm probably just brain-farting with my Honda Civic - I think it runs 5W20.

 

[datsuyama]

No, 5w30 or 10w30 or 5w40.

5w20 is too thin.


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Copy that! Thank you!