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Unread 05-27-2014, 08:42 PM   #1
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Default Oil Change

Hi,

I know nothing about cars.
I have a 1996 Corolla that has logged ~240k? miles. I've been told I should do an oil change every 3000 miles. Oops. It says online that it's best to use 5W30 oil but some help person at an auto parts shop got me 20W50. That seems like a big difference there. Maybe her reasoning is that cars that logged more miles need thicker oil?

I live in Bay Area of California, so it's not extremely cold or hot. It might get to 100F on a few very bad days, and 35F on the worst days of winter. Averaging... 60F? It never snows here or anything. I don't want to use a different oil in winter and a different one in summer.

My driving is mostly freeway driving, where I try to go a steady 60-65 mph.

I don't know if my car burns oil because this is the first I'm even thinking about an oil change. In the past my mother used to handle all of that but it's all up to me now.

Do I go return it and get 5w30? I want to strike a good balance of fuel efficiency and car longevity.

I think I know where the oil drain plug is. Looks like it. Still looking for oil filter location. I don't have a jack stand, so I want to get this done without elevating the car. I've been told it's
"It is in the front of the engine block. if you look at the left side of the exhaust manifold, its directly below it. Right up under the master cylinder for the brakes." Where-ever that is, lol.

Last edited by Darkwizzie; 05-27-2014 at 10:40 PM.

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Unread 05-27-2014, 11:58 PM   #2
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Don't use that oil! It could damage your engine.

It was created for older high performance engine of the '60 & '70s.

The oil passages and clearances in new engines are smaller and that thick oil moves too slow through the small passages and will starve the bearings of oil.

Use 5/30W or 10/30W
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Unread 05-28-2014, 04:30 PM   #3
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Hey,

Thanks for the reply.
I just got some 5/30. The problem is, I couldn't exchange the 20W50. The shop person picked it out for me and as it turns out, it was already opened. I never opened the container myself, and I can't exchange or return it. That blows. In the future can I use a blend of 5/30 with a little bit of 20W50 each time to try to get some use out of this bottle of oil, or is it just completely useless to me?

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Unread 05-28-2014, 04:38 PM   #4
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I'm no expert, but only if it's heavily diluted in the 5W30. That would be my educated guess, but I'd wait for the more experienced folk to sound off.
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Unread 05-28-2014, 05:35 PM   #5
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Yea adding a quart of the 20w-50 would thicking up the 5w-30 to probably a 10w-40 or so. Shame on them for selling you such a thick oil.
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Unread 05-28-2014, 07:46 PM   #6
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Quote:
Originally Posted by psp4ever View Post
Yea adding a quart of the 20w-50 would thicking up the 5w-30 to probably a 10w-40 or so. Shame on them for selling you such a thick oil.
The real fun part is, I went back to exchange the oil and they said they couldn't do it because the seal is broken and it's opened. I never removed the cap let alone break any sort of safety seal, therefore the original person sold me the wrong oil, but also an opened oil at that which I cannot exchange or refund.

The nut for the oil drainage won't budge, and my tools don't work by milimeters so I went to buy a set with millimeter widths and the largest one on the set is too small for my oil drainage nut. Time to go back and get a refund. And then the oil filter I bought is probably the wrong one.

I've spent a good 5+ hours on this oil change and I have not managed to get the nut off.

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Unread 05-28-2014, 08:12 PM   #7
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The drain plug will be 17 or 19 mm. I should know this but...

Make sure you coat the O-ring on the oil filter with clean oil before you put it on.

Give it a good twist, but hand tight only.
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Unread 05-28-2014, 08:48 PM   #8
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Quote:
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The drain plug will be 17 or 19 mm. I should know this but...

Make sure you coat the O-ring on the oil filter with clean oil before you put it on.

Give it a good twist, but hand tight only.
It's at 14 right now.

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Unread 05-28-2014, 09:05 PM   #9
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I pushed as hard as I could, I even pushed it with my leg with the 14mm and it just won't budge.

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Unread 05-28-2014, 09:20 PM   #10
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They should never be that tight!

Are you sure you are turning the plug to the left, counter clockwise?

Are you sure you are on the drain plug of the engine's oil pan?

I'm not positive if this photo is correct.


I think it is.


I'm concerned that you are either turning it the wrong way or are on the wrong fitting.
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Last edited by Mr Car Guy; 05-28-2014 at 09:26 PM.

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