Using XXw-20 on a 5w-30 car with shorter OCI

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If lube companies are going to recommended 3000 mile OCIs, would I be able to get the benefits of a 5w-20 and get away with using it even though my car specs a 5w30? It's a 2002 Mitsubishi Lancer. Newer, similar cars spec 5w-20 anyways
 
Many 5w30s shear to 20 weight numbers so using a 20 weight that stays in grade shouldn't present a problem. If it were mine I'd use the 5w-20, especially in the winter. Just my opinion.
 
That kinda defeats the whole purpose, doesn't it? While GM hung on to the 5w30 and the 7500/6m deal, Ford went initially for the 5w-20 and 5k. The odds of even the entire rolling fleet saving enough fuel to offset the COSTS of the fuel refining byproduct (the added oil changes) is unlikely.


Now if there's a car that is using the time interval, and mostly sees shorter trips, then, without some specific reason not to, using a grade lighter isn't going to mean much in the big scheme. The vehicle may never see much operation at a 20 weight (if viscosity has any impact upon the engine at all).
 
Originally Posted By: sangyup81
If lube companies are going to recommended 3000 mile OCIs, would I be able to get the benefits of a 5w-20 and get away with using it even though my car specs a 5w30? It's a 2002 Mitsubishi Lancer. Newer, similar cars spec 5w-20 anyways


What benefits are these, other than a very slightly higher fuel economy?
 
A 5W-20 is lighter at all temperatures to a 5w30 particularly at start-up and during the warming up period.

You didn't mention how you operate your car, but if you spend most of the time in short commutes and trips, especially during the winter months then yes there would be a lubrication benefit.
On the other hand if you spend 90% of the time on the highway at speed, especially during the summer months, then there would be little benefit.
 
mainly looking for a low cold cSt viscosity to experiment and see if there are any benefits

that Toyota 0w-20 would fit the bill nicely
20.gif
 
Originally Posted By: sangyup81
mainly looking for a low cold cSt viscosity to experiment and see if there are any benefits

that Toyota 0w-20 would fit the bill nicely
20.gif



I couldn't agree more!
 
I seen no reason to change oil any earlier using 5W20 or 0W20 then using 5W30. As noted in many previous posts, I have used 0W20 Mobil 1 exclusively for the last 275k miles on:
My 94 Escort commuter Car.
3.1 Litre Lumina APV tow vehicle.

As a diehard snow skier, in the mountains a lot every winter - & using the 0W20 Mobil 1 - you will often be the only car starting in the parking lots each morning, if temps go to -30f or below.

I have done only 20K mile changes on both these cars, and both seem to run like new, quiet, no oil consumption, etc.

The tow vehicle pulls 5,000 lbs 4 days a week, and often pulls 700 miles on blistering hot weekends, truly a grueling schedule for a 3.1 litre Chevy V6. This should mean there is lots of reserve in 0W20 for less demanding users.
 
This is mainly because I'm bored. I'm even willing to put in an oil cooler with a dual oil filter relocator to make this work.
 
Originally Posted By: sangyup81
This is mainly because I'm bored. I'm even willing to put in an oil cooler with a dual oil filter relocator to make this work.


No need for that. If you like experimenting thin try Royal Purple Race 9 0w-10. I ran this 11k miles in an '07 Camry and it worked very well.
 
Originally Posted By: umungus1122
Originally Posted By: sangyup81
This is mainly because I'm bored. I'm even willing to put in an oil cooler with a dual oil filter relocator to make this work.


No need for that. If you like experimenting thin try Royal Purple Race 9 0w-10. I ran this 11k miles in an '07 Camry and it worked very well.


The non SM rated Royal Purple XPR 0W-10 has a very low VI of only 140 consiquently at any temperature at room temperature or lower the Toyota 0W-20 is actual lighter.
 
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