Best engine oil grade for EVO X: 15W-50?

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Dec 8, 2009 | 09:10 AM

#16

SBR INC

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From: Sanford, FL!!!

Quote:

Originally Posted by therocket

Right now here it's 5°C (41°F). Usually the lowest temperature we have in winter in this area is -6°C (=20°F), average is around 4-5°C (40°F) during day in winter.
In summer instead we reach 30-35°C (86-95°F) during hottest days.

Thanks to all of you for your suggestions, it's good that at the end it seems we have all the same idea: a 15W50 can give more disadvantages than benefits on a stock 4B11 engine. From Saturday it will not stay in my car anymore...

5W 30 or even 10W 30 in the winter and you will be fine. I am not a big fan of Mobil 1, but that is only my opinion - Motul and Brad Penn oil are by far my favorite oil's to use.

I run SAE 10W-40 PENN GRADE 1 Partial Synthetic High Performance Oil in my EVO X - as I am not a fan of the 5W in Central Florida, I will run this year round.

When I build this motor, I will most likely run a 15W or 20W depending on the bearing clearances I choose in respect to the horsepower goals for my car.

Not sure if this helps much - but either way have a good holiday season!

Mike Huml
Slowboy -

Dec 9, 2009 | 11:27 AM

#17

apagan01

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From: digging for oil

Quote:

Originally Posted by jackygor

I have noticed from switching from 5-30 to 0-30 amsoil, my mileage went up (probably due to thinner oil) and start up seems to be smoother. And my engine seems to rev "better". During spring time, I will change the oil with some amsoil dominator 10-30 and I will keep track of the mileage to see if there is a different.

Yep sir the engine will loosen up, run smoother. and the best of all of this is that you can have peace of mind with running that oil, still will hold its film strengh for a long haul.

Jun 8, 2010 | 05:24 AM

#18

newboy99

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From: st. kitts

i an hear reading the post an i am learning alot but i live in the caribbean an it is hot down here so what grade of oil would u suggest for me i am thinking ok using 10w30 what you think?