Accidentally dumped 5w-30 in the ZJ...Change? - Page 2 - JeepForum.com

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post #16 of 42 Old 05-04-2007, 12:07 AM
gregs887
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Quote:
Originally Posted by greasefingers
Yup me too. I use 5w-30 during the winter only and 10w-30 for the rest of the year.
Don't mean to hijack, but what would be the benefit of running 5w in the winter and 10w in the summer? Does the 10w not perform as well in colder temperatures?


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post #17 of 42 Old 05-04-2007, 10:24 AM
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Did the image from SJZ in post 5 answer that for you? It's a matter of viscosity (thickness or thinness depending on temp & other factors).

Generally, as temps get colder, liquids flow (or "peform" in an engine) less like water & more like syrup. The same applies to hot weather, but liquids flow more like water than syrup.

So... oil is designed to be used in "anticipated" temps with different ratings like 10w or 5w.


If that's clear enough to understand , the graph will help you from there...

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post #18 of 42 Old 05-04-2007, 06:44 PM
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post #19 of 42 Old 05-05-2007, 07:43 AM
cmonson
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I personally run 5-30 in the colder months in the winter.

I run 10-30 all summer.

You will be fine in NJ with 5-30 though.
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post #20 of 42 Old 11-07-2013, 03:57 PM
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Thankyas for this thread. Was just about to pose the same question, cuz despite changing radiators, water pumps, Tstats, belts, brakes & other general multi-hour maintenance items on the ol'Blackbird, I leave my oil changes to coupons at Firestone or on rare occasion JLube. Wife had to take it in, as I had lost enough oil that it was barely on the dipstick (and pressure gauge is bouncing a bit...not a good sign I don't believe...another matter at 210K clocked over this week) & they put in 5w30 instead of the standard 10w. It was nice peace of mind to see that pic from the '98 manual about temps as a high temp between now & March is max at about 60*, so I guess they did the right thing, even though I've never had 5w ran in my ZJ before.

Ah well, no need to waste time goin back there or lose a min. of sleep over it now that I know it was kewl kool coolio coolbeans. Cool. Like winter :P
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post #21 of 42 Old 11-07-2013, 04:23 PM
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Quote:
Originally Posted by DRUMatthias View Post
Thankyas for this thread. Was just about to pose the same question, cuz despite changing radiators, water pumps, Tstats, belts, brakes & other general multi-hour maintenance items on the ol'Blackbird, I leave my oil changes to coupons at Firestone or on rare occasion JLube. Wife had to take it in, as I had lost enough oil that it was barely on the dipstick (and pressure gauge is bouncing a bit...not a good sign I don't believe...another matter at 210K clocked over this week) & they put in 5w30 instead of the standard 10w. It was nice peace of mind to see that pic from the '98 manual about temps as a high temp between now & March is max at about 60*, so I guess they did the right thing, even though I've never had 5w ran in my ZJ before.

Ah well, no need to waste time goin back there or lose a min. of sleep over it now that I know it was kewl kool coolio coolbeans. Cool. Like winter :P
let me get this straight...you can change brakes, radiators, thermostats, etc, but you dont change your own oil?

Reliability is relative
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post #22 of 42 Old 11-07-2013, 04:45 PM
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I have been using 5w-30 all year around. It's totes kewl.
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post #23 of 42 Old 11-07-2013, 05:29 PM
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Back in the day,lol, they sold reclaimed oil in my town in these pour spout glass jars. I don't think you knew what weight it was. It wasn't going to stay in the beaters long enough to matter.

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post #24 of 42 Old 11-08-2013, 07:55 AM
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Thin oil carries heat away from bearings and friction surfaces faster than thick oil. 5-30 might be the best thing to run. I don't go by the owners manual chart viscosity, I go by my climate, use, condition of engine etc.
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post #25 of 42 Old 11-08-2013, 08:16 AM
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I use the 5w 30 because it's thinner at start up and gets the oil moving around faster in colder weather. It runs the same thickness as 10w 30 after it heats up.
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post #26 of 42 Old 11-08-2013, 09:40 AM
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I run Castrol 0W30 all year round. At operating temperature (210 F) its viscosity is on the higher end of the 30 weight range, at low temperatures it doesn't get as thick as either the 5W30 or 10W30 oils. Only disadvantage is its higher price.

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post #27 of 42 Old 11-08-2013, 09:40 AM
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I think im running 5-20 cause it was free kewl hey lol. Ill probably be running 5-30 once I have to pay for it which will be soon.
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post #28 of 42 Old 11-08-2013, 11:43 AM
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Quote:
Originally Posted by DRUMatthias View Post
Thankyas for this thread. Was just about to pose the same question, cuz despite changing radiators, water pumps, Tstats, belts, brakes & other general multi-hour maintenance items on the ol'Blackbird, I leave my oil changes to coupons at Firestone or on rare occasion JLube. Wife had to take it in, as I had lost enough oil that it was barely on the dipstick (and pressure gauge is bouncing a bit...not a good sign I don't believe...another matter at 210K clocked over this week) & they put in 5w30 instead of the standard 10w. It was nice peace of mind to see that pic from the '98 manual about temps as a high temp between now & March is max at about 60*, so I guess they did the right thing, even though I've never had 5w ran in my ZJ before.

Ah well, no need to waste time goin back there or lose a min. of sleep over it now that I know it was kewl kool coolio coolbeans. Cool. Like winter :P

So wait, you resurrected a 6 1/2 year old thread just to say "thank you"?
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post #29 of 42 Old 11-08-2013, 12:22 PM
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Quote:
Originally Posted by PolkaPower View Post
I have been using 5w-30 all year around. It's totes kewl.
Same here, I've been using 5W-30 full synth. all year long on my ZJ and used it mostly on both XJs. It usually doesn't get much hotter than ~80-85*F during summer, usually averaging in mid-to high 70s and during winter it's anything between -25 up to around 50*F. No problems at all with oil pressure.

I tried running 10W-30 and 10W-40 on the XJ, didn't really see any difference in oil pressures. That was during summer months though.


Quote:
Originally Posted by ROFLwaffles View Post
So wait, you resurrected a 6 1/2 year old thread just to say "thank you"?
Pretty much looks like that's exactly what he did

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post #30 of 42 Old 11-08-2013, 04:38 PM
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Quote:
Originally Posted by dnuccio View Post
let me get this straight...you can change brakes, radiators, thermostats, etc, but you dont change your own oil?
You got it straight. I choose to let someone else do it. Cheaper to pay for it to get done than the cost of materials alone for me here. Told ya it's weird but it's how I've rolled for years. Don't think I've changed oil myself in about 7 years or so.

Quote:
Originally Posted by ROFLwaffles View Post
So wait, you resurrected a 6 1/2 year old thread just to say "thank you"?
Quote:
Originally Posted by Timo_90xj View Post
Pretty much looks like that's exactly what he did
Yup! Got that right too. No need to get cursed for starting a new thread that was already answered & my Thank you reply generated a lot more responses that ultimately kept me from running back to Jiffy Lube & cussin em out for puttin the wrong oil in there, when they seemed to legitimately be going by outside temps as the reason for the 5w adjustment, so that was kewl too! Strength in #s
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