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5w-40 Oil Insted Of 5w-30 The 5.3l? And Oilpressure

the swede

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the swede New Member

the swede

Posted
Posted

Hello!

 

does anyone know if it's ok to put 5w-40 oil in a sierra 1500 5.3L -00 insted of the recomended 5w-30.

why im asking is becuse I just buouht oil for my truck and I got the wrong one and there is no refound...

I live way up north in sweden so im gonna be driving in temperatures from -22F in the winter to 86F in the summer.

I also wonder if anyone knows how much the oilpressure is supose to be in the 5.3L I only have around 20psi bur I think my sending unit is broken. I'll chek it with a mecanical gage next week.

 

hope you all understands what Im writing even thoug my spelling is pretty bad.

Thanks for helping. Patrik

dlstewart01 Senior Enthusiast

dlstewart01

Posted
Posted
Hello!

 

does anyone know if it's ok to put 5w-40 oil in a sierra 1500 5.3L -00 insted of the recomended 5w-30.

why im asking is becuse I just buouht oil for my truck and I got the wrong one and there is no refound...

I live way up north in sweden so im gonna be driving in temperatures from -22F in the winter to 86F in the summer.

I also wonder if anyone knows how much the oilpressure is supose to be in the 5.3L I only have around 20psi bur I think my sending unit is broken. I'll chek it with a mecanical gage next week.

 

hope you all understands what Im writing even thoug my spelling is pretty bad.

Thanks for helping. Patrik

 

 

It will be fine. Don't worry about it.

 

Have a good one,

 

Don

the swede New Member

the swede

Posted
  • Author
Posted
Hello!

 

does anyone know if it's ok to put 5w-40 oil in a sierra 1500 5.3L -00 insted of the recomended 5w-30.

why im asking is becuse I just buouht oil for my truck and I got the wrong one and there is no refound...

I live way up north in sweden so im gonna be driving in temperatures from -22F in the winter to 86F in the summer.

I also wonder if anyone knows how much the oilpressure is supose to be in the 5.3L I only have around 20psi bur I think my sending unit is broken. I'll chek it with a mecanical gage next week.

 

hope you all understands what Im writing even thoug my spelling is pretty bad.

Thanks for helping. Patrik

 

 

It will be fine. Don't worry about it.

 

Have a good one,

 

Don

 

 

 

 

 

Thanks Don!

Tucson_02Silverado Senior Enthusiast

Tucson_02Silverado

Posted
Posted

The dash gauge on mine is just above 40psi at idle (550 rpm) and just under 60 with greater rpm on 5W30. But temperature is going to make a difference with viscousity. Not to "rub" it in or anything, for perspective, my oil pressure is based on it being avg 90*F during the days here this week. Nowhere near your -22.

 

By mistake (not looking at the bottles, just the shelf tags), I've ran with 10W30. Lost 1 MPG on the highway with that stuff. But I ran with it for 5000 miles, changing it early at even 1000 miles wouldn't have saved any monies over the fuel consumption. Synthetic.

the swede New Member

the swede

Posted
  • Author
Posted

Thanks for replying. intressting reading there uj truck. Well I just changed the oil and i did put the 5w-40 in my truck.

 

Tucson Is the 40psi at cold starts or when it has ben runnig for a while? hehe "not to rub it in" love that. I lived in SoCal for one year and I miss the weather every day! Im telling you next week we will probobly get snow! and on top of it all gas is 6.50usd a gallon!!!

CapitalTruck Senior Enthusiast

CapitalTruck

Posted
Posted

Buddy, in that climate I wouldn't want to run 5w40, it seems like the viscosity spread is too much (a lot of difference between the 5 and the 40. That involves more additives and chemistry. Man, all through my owners manual it says "never use 10w40", I can't imagine why 5w40 would be approved. Stick to the synthetic 5w30. Also, you have a block heater in that right?

c4cruiser Enthusiast

c4cruiser

Posted
Posted

I think that you should check with GM in Sweden to see exactly what is recommended for your particular year and engine size in your climate. Winter temps can get awfully cold even to the extent of -0 degrees C. I would think that a 0W-30 during the winter months would be much more appropriate even if you have an electric block heater or have the truck in a garage.

 

-22F temps should not really be an issue for a good quality 5W-30 dino oil but if the temps would go below that, you should use a full synthetic in either 5W-30 or 0W-30. The other thing that would be important is to try to get oil temps up to normal operating ranges so that condensation inside the motor will burn off. Short trips will not get the oil temps high enough and that is a quick way to leave carbon deposits and sludge in the motor.

 

For the summler months, the recommended 5W-30 would be fine. I would think that Castrol is widely available throughout Sweden (and Europe) so look at Castrol synthetic in 5W-30 for your next oil change.

 

And even at -22F, I would certainly think about a block heater and an insulating or heated blanket for the battery. At those cold temps, battery life and the amount of available cranking amps drop quickly.

the swede New Member

the swede

Posted
  • Author
Posted

Well I think I'll stay with the 5w-40 for now and maybe use the 5w-30 next change.

the strange thing is, I looked up what kind of oil theres supose to be in my friends cars, they all drive european or japanes stuff (dont understand why) and they all are supose to use the 5-w40. and I also looked for a 5w-30 oil in the store and all of them was like doubble the price of all the other ones.. strange.

I just installed a block heater. it will heat up the coolant and circulate it so the hole block heats up. over here thats almoast nessesary.

I would talk to GM sweden if it wasnt for that that in sweden all GM offers is crapy corean cars (daewoo) with chevy emblems. I imported mine home from california. a fun thing you can do is to compare www.chevrolet.se and www.chevrolet.com

Im gonna chek the oilpressure with a mecanical gage on friday after work so <i guess then I'll find out whats wrong with the pressure.

Thanks everyboddy for responding!

 

Patrik

sno Enthusiast

sno

Posted
Posted

I doubt 5w-40 is going to do anything bad to your engine compared to 5w-30. Keep in mind that the "5" is the cold temperature viscosity. So both oils will flow the same at the low end of the thermometer.

  • 2 weeks later...
brownsugar Enthusiast

brownsugar

Posted
Posted
Hello!

 

does anyone know if it's ok to put 5w-40 oil in a sierra 1500 5.3L -00 insted of the recomended 5w-30.

why im asking is becuse I just buouht oil for my truck and I got the wrong one and there is no refound...

I live way up north in sweden so im gonna be driving in temperatures from -22F in the winter to 86F in the summer.

I also wonder if anyone knows how much the oilpressure is supose to be in the 5.3L I only have around 20psi bur I think my sending unit is broken. I'll chek it with a mecanical gage next week.

 

hope you all understands what Im writing even thoug my spelling is pretty bad.

Thanks for helping. Patrik

 

Have you tried anything like this swede?

 

http://www.tomsbuyandsell.com/Engine-Oil-H...auction_details

 

Up here in the Northern Canada the winters get that bad too until I put one of these heaters on my truck and now every morning she starts up as if its summer. This thing put my block heater to shame.

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