5w-30 versus 10w-40 - Maxima Forums



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5w-30 versus 10w-40

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Old 05-31-2006, 11:14 PM   #1
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5w-30 versus 10w-40

i was short on time and i had an oil change done at a shop i used to goto. The damn guy was putting in 10w-40 of this proline brand and I caught him right when he was finishing off the first quart. I told him to put in 5w-30 and he said sorry no can do. He then says to me that for older, higer mileage engines, it's better to use a thicker oil because there are gaps everywhere within the engine because of longtime use. I told him to shove it, didn't pay, and bounced.

I've been using 5w-30 for 2 years now and i have 10w-40 in there now. should I be worried? should I do more frequent oil changes for the next couple intervals to get all the 10w-40 out and 5w-30 in? i need to find a nice oil catch pan to store used oil. thanks for reading
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Old 06-01-2006, 12:25 AM   #2
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You shouldn't worry too much...however, 5w-30 is the factory recommended oil...so I suggest you take it to another shop and have them put in 5w-30...

Walmart sells some nice oil cointainers...you can get a 15qt one (huge) for only like $8-$9
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Old 06-01-2006, 07:05 AM   #3
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I was running 5W 30 Castrol GTX for a long time. That stuff feels like light machine oil when its hot and almost runs like water. I recently switched to Geman Castrol 0-W30 which is a little thicker. The engine runs a lot quieter.

I wouldnt freak out about the heavier weight oil.
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Old 06-01-2006, 08:19 AM   #4
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Don't sweat the 10w40 in there for the summer but I'd definitely go back to the 5w30 for the winter in Jersey.
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Old 06-01-2006, 10:59 AM   #5
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10W40 isn't recommended as per the user's manual.
BTW, 10W40 is definetly thick oil for the NE by any stds!!!
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Old 06-01-2006, 02:42 PM   #6
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Quote:
Originally Posted by kbmaxima
i was short on time and i had an oil change done at a shop i used to goto. The damn guy was putting in 10w-40 of this proline brand and I caught him right when he was finishing off the first quart. I told him to put in 5w-30 and he said sorry no can do. He then says to me that for older, higer mileage engines, it's better to use a thicker oil because there are gaps everywhere within the engine because of longtime use. I told him to shove it, didn't pay, and bounced.

I've been using 5w-30 for 2 years now and i have 10w-40 in there now. should I be worried? should I do more frequent oil changes for the next couple intervals to get all the 10w-40 out and 5w-30 in? i need to find a nice oil catch pan to store used oil. thanks for reading
buy ur own oil and bring it over to me... i'll change it in no time... with watever oil u want...
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Old 06-01-2006, 05:10 PM   #7
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Originally Posted by KabirUTA13
buy ur own oil and bring it over to me... i'll change it in no time... with watever oil u want...
i may take u up on your offer. u frequent the downtwon area in paterson a lot?
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Old 06-03-2006, 11:33 PM   #8
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Quote:
Originally Posted by steven88
You shouldn't worry too much...however, 5w-30 is the factory recommended oil.
That is the factory recommended weight for oil in the USA. But in Europe (I've been told) that Nissan recommends 10W30 weight -- which is the weight I use in the summer and 5W30 in the winter.

I would not worry about the heavier weight oil for the summer, but certainly change to a lighter weight by fall.

I'm told that Honda now recommends only 5W20 weight oil for all of their engines in the USA. Now that is a light weight oil.
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Old 06-06-2006, 06:14 PM   #9
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um, this is why i don't go to those places...the one by my was just cleaning the filter and leaving the oil...and they did that for a bit then got in deep ****
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Old 06-06-2006, 06:28 PM   #10
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Quote:
Originally Posted by kbmaxima
i was short on time and i had an oil change done at a shop i used to goto. The damn guy was putting in 10w-40 of this proline brand and I caught him right when he was finishing off the first quart. I told him to put in 5w-30 and he said sorry no can do. He then says to me that for older, higer mileage engines, it's better to use a thicker oil because there are gaps everywhere within the engine because of longtime use. I told him to shove it, didn't pay, and bounced.

I've been using 5w-30 for 2 years now and i have 10w-40 in there now. should I be worried? should I do more frequent oil changes for the next couple intervals to get all the 10w-40 out and 5w-30 in? i need to find a nice oil catch pan to store used oil. thanks for reading
don't sweat it, 10-40 is fine in the summer. (if not better) But buy your own oil & filter next time. Most of those places use the cheapest stuff they can get.
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Old 06-06-2006, 09:38 PM   #11
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Quote:
Originally Posted by Love_00_Max
10W40 isn't recommended as per the user's manual.
BTW, 10W40 is definetly thick oil for the NE by any stds!!!
I don't know about older VQ series engines, the the manual for my 04 G35 specs three grades of oil, 5w-30, 10w-30, and 10w-40. It does say that the 5w-30 is preferred. I've been running GC in my VQ35 too (just over 12 cSt or almost a 40wt itself), and it runs noticeably quieter and smoother than it does when fed a 10 cSt oil. I wouldn't be worried at all, unless perhaps you were in the throes of the coldest of winters. Lose no sleep over this one.
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Old 06-06-2006, 10:21 PM   #12
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Originally Posted by kbmaxima
i may take u up on your offer. u frequent the downtwon area in paterson a lot?
i live near paterson... d/t is bout 5 min from me...
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