5w30 or 10w30?

[02fbody35th]

I know the dealer recomends 5w30 oil but i recently switched from 10w30 to 5w30 and noticed alot more lifter noise. so i was wondering what you guys run and with what results. Is it ok to run 10w30. i just dont like all the lifter noise.

[Smittro]

I know the dealer recomends 5w30 oil but i recently switched from 10w30 to 5w30 and noticed alot more lifter noise. so i was wondering what you guys run and with what results. Is it ok to run 10w30. i just dont like all the lifter noise.

Well I believe 10w30 becomes lighter as it gets hot. For me I went from the factory recommended 10w30 down to 5w30. Not an ls1 but the results are good. I did'nt get the lifter noise but I did get a noticablely lower operating temp. My gas mileage improved to about 1.5-2 mpg.. Lifter noise may go away over time and continued use depending on the mileage of the engine. Many folks use a 0wXX with good results. You may want to do a UAO and see which is best for yours..

[tatertot91]

valvoline syn power 10-30, i have very little valvetrain noise

[pajeff02]

Penzoil Platinum 5W-30 Synthetic. I have the usual start up noise and then she quiets down after a little heat builds in the engine.

[Smittro]

Oh I use castrol gtx non synth.. I've been using it 20 years never any oiling issues..

[pajeff02]

Oh I use castrol gtx non synth.. I've been using it 20 years never any oiling issues..

^^ Same thing I use in all our DD's -- never had any issues either and things seem to stay nice and clean under the valve covers and such.

[Smittro]

^^ Same thing I use in all our DD's -- never had any issues either and things seem to stay nice and clean under the valve covers and such.

as you know I had my top end apart over the winter and can tell you other than the usual brown hue on the oiled surfaces of the block there was no sludge build up of any kind.. 80+k on the ticker too. Got her with 26ish-k on the clock.

[karpetcm]

Valvoline Syn here and no issues so far 10w-30

[zeetwentyeight]

Im running a mobil one 5w30 and its noisy as hell i think im gonna try a straight 30 next time unless some one has a good reason to object to that one

[shady milkman]

Im running a mobil one 5w30 and its noisy as hell i think im gonna try a straight 30 next time unless some one has a good reason to object to that one

fuck mobil 1 ..............go penz

[Smittro]

Im running a mobil one 5w30 and its noisy as hell i think im gonna try a straight 30 next time unless some one has a good reason to object to that one

Tight tolerances don't always like the heavy stuff and can actually do more harm than good sometimes. I don't mess with mobil 1..

[02fbody35th]

well it seems like the guys running 5w30 have the same valvetrain noise as i do and the 10w30 guys have less so i think im gonna switch back to a 10w30 on my next change. thanks for the replies guys.

[zeetwentyeight]

fuck mobil 1 ..............go penz

I sell about 100 gallons of platinum and penzoils new ULTRA a day, i used to run it till i started getting water in my oil

[xTAWS6X]

I run 20w-50 VR1

[Smittro]

I run 20w-50 VR1

[xTAWS6X]

No love?

[Smittro]

No love?

lol Nah that's just some heavy stuff man. wow

[xTAWS6X]

lol Nah that's just some heavy stuff man. wow

it sticks real well

[cammed goat]

Mobil 1 or Castrol Syntec. Both 5w30

[shady milkman]

I sell about 100 gallons of platinum and penzoils new ULTRA a day, i used to run it till i started getting water in my oil

really ...PP has been great to me for the year+ ive been using it.

i just changed my oil yesterday with ultra 5w-30 ..we will see how that goes