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 ;)

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

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

nycgps I'm in Nyc with you, figure 5w30 will hold up fine?

al

plan b.

and yes it will do just fine.

beers :beer:

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 ;)

I've used 20-50 at the track before.

I ran 20w50 in my 1st gen RX-7 and I never had a problem...

I was thinking of switching to 5w30 when it gets warm around here (80 plus). Right now it is about 40 or so.

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 ?

yep.

beers :beer:

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".......

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 :)

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.

what is the recommendation for track days? 10w40?

i just used 5w30 RP and it seemed my engine was craving it. i'ma now on the w30 bandwagon

Canola Oil Ftw !!!!!

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!

I use 20-50 only.

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)

did you buy the plate?

I'm a dino oil peon at that ...

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 ?

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?

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.