Which is harder on motor oil: turbo or super?

[ProfPS]

I am interested to know which is harder on motor oil: a high RPM engine with a turbo charger with heat from the exhaust, or a low end torque engine with a super charger with added crankshaft stress?

There are probably more heat and friction producers in each but seem to be the most obvious.

Thanks.

 

[Merkava_4]

My unqualified opinion would be that turbos are harder on oil since the engine's oil is circulated through the turbocharger.

 

[Max_Wander]

i'd say turbo because there is a lot more backpressure and more blowby. sometimes the grey area between boost and cruising/vacuum can cause some enrichment issues as well

 

[bdcardinal]

depends on the type of supercharger. if it is a roots or twin screw style or a procharger than there shouldnt be much effect, all have internal oil supplies. if it is another kind of centrifugal blower that uses engine oil for lubrication, then it would have similar wear to a turbocharger.

 

[oily boyd]

Quote:

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the engine's oil is circulated through the turbocharger.

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and since the turbine wheel is heated by the exhaust stream, the heat gets transferred to the oil.

Turbo's are much harder on oil for that reason.

 

[kapps]

I agree. If the SC uses engine oil for lubrication, then it's going to be hard on oil just like a turbo. Otherwise, turbo is harder on oil than SC.

 

[wgtoys]

Heat is the great enemy and in general a turbocharger runs #@$%! hot indeed since it is driven by exhaust gases.

 

[Steve S]

Motor oil gets beat up by the turbo look at the return oil. And the HEAT.

 

[DragRace]

I've got a oil fed Vortech Supercharger on my 87 Mustang GT. The oil gets hot! Trust me

 

[Steve S]

Quote:

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I've got a oil fed Vortech Supercharger on my 87 Mustang GT. The oil gets hot! Trust me

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I trust you ,more air and fuel.

 

[ProfPS]

Thanks for the replys. Your input is greatly appreciated.

Which oil weight, type, and brand would you use for each? If your response is regionally oriented, lets generalize by limiting it to northern temps and southerns temps since the average temps are somewhat consitent if you drew a parallel line from Sacramento to D.C.

Thanks.

 

[Spector]

Twin turbo, been using Amsoil 10W30 for last 6 years