QUASAR

iTrader: (6)

i accidentally bought straight 30wt for the winter ride. Grabbed the wrong box. It is Exxon Superflow SAE30.

Is that going to hurt my motor at startup? Not thin enough for those cold winter starts? It is for a 2.0l 4 clyinder, but i think the same should apply to all cars. Will this oil be safe to use? I lost the recipt so i cant take it back... <img src="images/icons/frown.gif" border="0">


<img src="images/icons/smile.gif" border="0">

[ November 26, 2001: Message edited by: RED QUASAR ]</p>

Dave F

You should swap it if you can. In theory, a 10w oil is thinner than a 30w oil. Simple, right. Well, a 10w30 acts like a 10w at cold temps, and acts like a 30w at hot temps. In other words, it flows better when cold than a 30w, and holds up better at high temps than a 10w.

Some of the new 0w30 oils have even more impressive curves. Due to your note about it being for the Winter, I would try and swap it. If not, just make sure you warm the car up a little extra before hammering it!

Dave

Trevor @ Texas Speed & Perf.

iTrader: (3)

I'd definitely swap it out! That oil is going to be like molasses on a cold, winter morning, and your engine will not get the proper oiling. Cold starts are hard enough on your engine. Don't make it worse!

Patman

I'm surprised they even still sell straight 30 weight oil, since there really is no use for it at all. I would never use it, not even in a winter beater. You definitely want to use a 5w30 for a Michigan winter (which is the same weather as our Toronto winters)

[ November 27, 2001: Message edited by: Patman ]</p>

Reckless

iTrader: (9)

What about a place like Hawaii that never sees temp's below 60?

two step

10w 30 is a 10 weight oil that acts like 30w at higher temps 30w oil are more often used in diesels trucks

Plum Crazy Rob

iTrader: (3)

Use it in your lawn mower (the 30w).
This is what most of them spec.
Should be about a 12 year supply <img src="images/icons/wink.gif" border="0">

QUASAR

iTrader: (6)

[quote]Originally posted by Plum Crazy Rob:
Use it in your lawn mower (the 30w).
This is what most of them spec.
Should be about a 12 year supply <img src="images/icons/wink.gif" border="0"> <hr></blockquote>

thats what i was thinking <img src="images/icons/wink.gif" border="0">

Thanks for the replys guys, im gonna see if the store will let me swap. <img src="images/icons/smile.gif" border="0">

kewlbrz

polymers are added to oil to vary the weight range based on temp. Too big of a range in a conventional oil like 10w40 will break down very rapidly. Synthentics allow a much broader range, like 5w50 etc... But again, the broader the range the worse the durability.

You will find that a straight weight is often used in endurance type competitions where tempuratures are more consistant. The oil is "tuned" if you will. There is less "stuff" in the oil to make it vary properly, and more oil to do a specific job in straight weights.