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5w20 vs 5w30

Old 03-29-2008, 10:40 PM
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5w20 vs 5w30

This isn't a thread of synthetic vs non-synthetic.. or what brand to buy or not to buy.

Ive already been sold on Royal Purple but I'd like to see peoples personal preferences on 5w20 or 5w30, why one or the other.

al
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Old 03-29-2008, 10:43 PM
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get 20 weight if you like being a peon to CAFE.

get 30 weight if you like more protection for your engine.

My car currently has 10w30 rp, next oil change goes to 15w40
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Old 03-29-2008, 10:46 PM
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If you want to push your motor as much as possible without an early engine death then 5w30 or even Xw50 (replace the X with the number of ur choice, like 0, 5, 10, or 15) use straight grade only if ure area is pretty hot all year long.

If you're going to drive like your grandmother, redline like once per month, be part of the C.A.F.E. Supporter then go with 5w20
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Old 03-29-2008, 11:44 PM
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nycgps I'm in Nyc with you, figure 5w30 will hold up fine?

al
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Old 03-30-2008, 12:49 AM
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plan b.

and yes it will do just fine.

beers
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Old 03-30-2008, 12:51 AM
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Originally Posted by swoope View Post
plan b.

and yes it will do just fine.

beers
thanks for the rp link.. im driving the car from ohio back here to nyc and will be stopping by in PA at the karlracing warehouse to pick up the case of rp!

al
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Old 03-30-2008, 12:52 AM
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I've used 20-50 at the track before.
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Old 03-30-2008, 12:57 AM
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Originally Posted by Razz1 View Post
I've used 20-50 at the track before.
I ran 20w50 in my 1st gen RX-7 and I never had a problem...
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Old 03-30-2008, 12:57 AM
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I was thinking of switching to 5w30 when it gets warm around here (80 plus). Right now it is about 40 or so.
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Old 03-30-2008, 01:18 AM
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so if you are in a area like the caribbean (like where i am - jamaica) where it's hot all year round, you guys recommend 5w30 ?
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Old 03-30-2008, 01:40 AM
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yep.

beers
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Old 03-30-2008, 02:31 AM
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We are lucky up here in Canada, the local branch of Exxon (Esso) makes an oil with a 100% polyalphaolefin basestock, in 0w30 and 0w40 grades.

Of course, I'll also be going straight to Hell because it's one of themthere newfangled "synthetoids".......
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Old 03-30-2008, 07:58 AM
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Originally Posted by alz0rz View Post
nycgps I'm in Nyc with you, figure 5w30 will hold up fine?

al
Totally fine.

Read my Signature down there for what I use/have

Im planning to switch to 10w40 in summer, 5w40 in winter months.

but not until my stock of 0w30 runs out
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Old 03-31-2008, 01:13 AM
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I've used 5w30 from the beginning with my 2004. At first it was because of the serious fuel dilution due to the original tune being over-rich. PCM revisions fixed that, but I stuck with 5w30, since it was the specification for the car in most markets outside of North America.
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Old 03-31-2008, 01:51 PM
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what is the recommendation for track days? 10w40?
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Old 05-21-2008, 08:13 PM
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i just used 5w30 RP and it seemed my engine was craving it. i'ma now on the w30 bandwagon
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Old 05-21-2008, 08:26 PM
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Canola Oil Ftw !!!!!
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Old 05-21-2008, 08:34 PM
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nycgps you got me thinking after reading your links.....so much so that friday im moving to 10w-30 so i dont have to worry about my hoopty and im good for the mazda corral at limerock on saturday!
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Old 05-21-2008, 08:53 PM
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I use 20-50 only.
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Old 05-21-2008, 09:20 PM
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Originally Posted by chrism View Post
nycgps you got me thinking after reading your links.....so much so that friday im moving to 10w-30 so i dont have to worry about my hoopty and im good for the mazda corral at limerock on saturday!
hoho ~~~ Im moving to 5w40 or 10w40 as soon as this week.(yes I jsut changed my oil 0w30 again 2 weeks ago, but I worry too much now so ... by going w40 I can stop the worrying for a while )

I guess I see you all at Limerock this saturday (trust me this time Im gonna clean my engine bay lol)
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Old 05-21-2008, 09:22 PM
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did you buy the plate?
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Old 05-21-2008, 09:28 PM
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I'm a dino oil peon at that ...
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Old 05-21-2008, 09:40 PM
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Originally Posted by chrism View Post
did you buy the plate?
oh yea, forgot. lol !

I just got myself the front & rear Autoexe adjustable end link.

I cleared my PM box yesterday, can u send me the link again ?
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Old 05-22-2008, 01:05 PM
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How about for SoCal? It's getting to be quite hot here since summer is coming up. I'm using 5w20 for now, but 5w30 will be better for the engine?
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Old 05-22-2008, 01:46 PM
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Heavier oil will protect more because it retain more heat and build a heavier film in the chamber, so yes. In a piston engine if you go too heavy you get sludge, but I don't know about the 8. Either way 5w-30 isn't that heavy.
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