Fuel, Oil, Cleaners & Other Maintenance Extending the life of your Civic requires the proper fuel, oil, and cleaners, along with other regularly scheduled maintenance.

5w30 ok?

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Old Feb 23, 2010
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Re: 5w30 ok?

I'm running 15w 40, have in all my cars for the past ten years. no problems
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Old Feb 23, 2010
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Re: 5w30 ok?

2 year old thread man lol
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Old Feb 23, 2010
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Re: 5w30 ok?

seriously.

you can run higher weight oil and ur car will be fine. the MPG might be hurt a little but not nothing darastic... (like u lose 1 or 2 mpg)

as far as dino and syn goes, most "full synthetic" oils are not even truly synthetic. they are still GROUP III oils but they are so pure that they "pass" as syn.

do ur research and see.
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Old Feb 25, 2010
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Re: 5w30 ok?

Originally Posted by speedfoos
I was running RP 5W30, but didn't like how it seemed to get dirty really quickly..
That's because it's doing it's job and cleaning your engine.

As far is 5w30 for the D17. It's perfectly safe, most 5w30 will shear down to a 20w over time anyways.
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Old Sep 3, 2022
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Re: 5w30 ok?

Originally Posted by bullet02ex
First of all I did some searching and found a lot of mixed reviews. I got my oil changed today and instead of going to the dealership where I work I took it to the guy who does all my installs. I know Honda says the recommended oil is 5w20 but he told me it was better to put in 5w30. I'm pretty sure it was the upper end Mobile1 5w30. Anyways some of the threads said 5w30 was good and some said to use 5w20. I AM NOT TURBO. It's an 2002 ex w/ 72,000 miles with just intake header and exhaust.

So was 5w30 ok and will it be better for the car..

Thanks
The main reason for Honda recommending 5W20 is that you will get a little better fuel mileage vs using 5w30 weight. Less resistance with 20w on the high end vs 30w. I personally like 5W30 in hot weather, and I use 5W20 in the Winter. My Civic has 226k on her, and she likes the 5W30 high mileage in the Summer.
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Old Sep 3, 2022
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Re: 5w30 ok?

Originally Posted by Flocker
The main reason for Honda recommending 5W20 is that you will get a little better fuel mileage vs using 5w30 weight. Less resistance with 20w on the high end vs 30w. I personally like 5W30 in hot weather, and I use 5W20 in the Winter. My Civic has 226k on her, and she likes the 5W30 high mileage in the Summer.
not if you have VTEC - their oil passages are tiny - mine had some VTEC pressure issues when using thicker oil
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Old Sep 3, 2022
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Re: 5w30 ok?

Wow that's hard to believe 30w on a warm engine, wouldn't flow well. You have 5w at startup. You look at Subaru WRX all recommend 5w30w, due to the heat from the turbo. The rest are running 0w20w though. My 05 Honda Civic, is the 1.7 non V-Tech. SOHC. I just changed her today with 5W30W, and she's very happy. LOL.
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Old Sep 3, 2022
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Re: 5w30 ok?

The engine is designed to run 5w20, run 5w20.
Hell, they even back spec'd 0w20 to 2001 for Hondas.
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Old Sep 3, 2022
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Re: 5w30 ok?

Originally Posted by Flocker
Wow that's hard to believe 30w on a warm engine, wouldn't flow well. You have 5w at startup. You look at Subaru WRX all recommend 5w30w, due to the heat from the turbo. The rest are running 0w20w though. My 05 Honda Civic, is the 1.7 non V-Tech. SOHC. I just changed her today with 5W30W, and she's very happy. LOL.
subarus... with the horizontal cylinders, they are prone to oil seeping to combustion chambers even more than vertical cylinders (recent Forrester issues with that are famous - reason I did not go with them)
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Old Sep 5, 2022
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Re: 5w30 ok?

I think you are missing the point, that 20w on the high end, is simply going to give you a little better fuel mileage. Yes of course Honda recommends 5w20w, because they don't want complaints, that the car is not getting the mpg, that is was supposed to get. I would rather have the protection of 30w synthetic in hot weather, than a couple mpg more. I respect your view on it though. Thank you.
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Old Oct 16, 2022
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Re: 5w30 ok?

Originally Posted by lxcivic2k1
Our cars recommend 5w20 so I only use it, but when I took it to Firestone for a safety inspection and an oil change(since it was there and needed it) they put in 5w30, I was pissed but it worked. Didn't give me any problems.
To be honest, Firestone isn't reputable to me. I've had an alignment done by them on my 2007 Volkswagen GTi 2.0T, and my steering wheel changed it's position for drive straight, a few times over the course of the day. Seemed alright, then by next week, I had crashed it due to mechanical failure in steering and brakes. They're a bit of a sham shop, almost like Mr. Tire. When you bring your vehicle in for an alignment, they ask for the purpose of it, on their notes. I told them "Maintenance" and the guy was like "Maintenance? Well I mean, people don't usually bring their car in routinely for an alignment. Like, is it pulling to one side of the road, or?" And my reply was "That's a shame they don't, but yeah. Just Maintenance."
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