20-EM2-05

Is it really necessary? Our car doesn't even require Synthetic and requires 87 octance. Unless you have some major engine work, going F/I, or tracking your car all the time.

I've heard and seen some people use Mobile 1 synthetic blend and change the filter + oil at every 3k miles.

Are people just wasting money on every single oil change?

I've used synthetic (5W-20 Mobile 1 high mileage) at 93XXX and changed oil at 8-9K miles, when i checked the dip stick after 96XXX the oil was still perfectly fine and not even required to change oil.

Now i'm back to regular blend (Castrol 10W-30). To clear the record, YES! you can go to synthetic or regular anytime, don't believe all that "Once you go synthetic you can't go back to regular" and going from 5W-20 to 10W-30 doesn't affect the motor, I just went to 10W-30 because I'm at high mileage. I'm going to aim for about 5K miles until I do my next oil and filter change.

So to sort it up all. It is even necessary? Or am I just so call, doing no good for my engine?

I noticed I get better MPG on 87 octance than on 89 or 91 (Chevron and Shell), I've read about that and tested it. Seems like people would waste about $1-$2 ever fill up if they used 89 or 91.

BTW: All stock, no mods. :D

ourbloodykisses

you are only supposed to use gas rated for your car. unless you are built, which you arent.
as for motor oil, its oil. change/add when you are low or when its dirty as hell. I dont know why people do this religiously.

Pothole987

i do mine from 6k to 7.5k KMS. did mine today it wasn't too black but really just want to keep oil clean of crap.

and to change the poop oil filter that mr lube put on

20-EM2-05

Yeah, That's what i'm saying. Well I still check the dip stick after 1k miles and try to add a little more oil into.

I just don't get why people would say "Change oil every 3k miles on synthetic".

Was your synthetic or regular?

TailZ

I change my oil every 5k with M1 5w30 Full Syn along with a new oil filter as well.

20-EM2-05

Is it really necessary though? Our engines are fuel economy "Vtec-E" and it's not set for high revving.

If people had an high revving engine I would understand why they would change their oil every 3-5K.

TailZ

it's not necessary.
i would say it is recommended.
it's your car. you can change the oil whenever you feel like it.
i've had my car since it was at 26,xxx mi. now it's at 80,xxx. I've been doing oil changes every 5k since then. if you don't want to use synthetic just stick with something conventional like castrol gtx and switch it out every 3k.

20-EM2-05

Yeah. Same here well I got the car brand new off the lot and have been putting castrol 5W-20 and every oil change after 5K, ever since 75XXX i've used mobile 1 and changed my oil after every 7-8K miles. Just always added an extra QT before i go and have to change the oil. Seems to suite me well also, I don't drive the car hard, just drive it to school and to places, no point anyways since it's an auto.

JTTeG_X

Mobil 1 5w-30 + filter every 5k. oil is never black, but fairly dark brown. I could squeeze in another 2k but I find the first 2k of new change, the car runs better. always regular pump unless I'm driving up higher elevations then I would try 89 to avoid pinging.

strictly commuter. I'm sure those who reach near redline frequently have to alter their maintenance schedules.

20-EM2-05

Thanks for the info. That's why I usually change the oil ever 7-8k for synthetic. I'll try checking on the oil for 10W-30.

rhiebert555

If you follow the Owner's Manual you should be safe. If in doubt, send an oil sample to a lab for analysis, that will tell you more than a mechanic could or just by looking at it.

ourbloodykisses

I use regular damn penzoil 5w20 and a fram.

Pothole987

i use regular in mine. the honda dealer recomended to me NOT to use synthetic oil in my car. they had no resonable explanation but i believed them

20-EM2-05

Yeah, that's what they told me also. I'm just wondering why people would still go synthetic and throw all that good oil to waste after 3k miles.

jrm

i run amsoil 0w30 and change it every 10k miles since i drive 150 miles a day 10k comes along quick. The car only honds 3 liters of oil so expensive amsoil isnt a problem

Pothole987

what car only holds 3 litres of oil? i never heard of such a thing

rhiebert555

Sounds like the dealer is satisfied with staying status-quo on the topic and you're happy to spend more money than necessary.

20-EM2-05

That's crazy. I usually fill my motor with 3 3/4-4 quarts after a new change and use another bottle within 5k miles.

Last time I checked with Mobile 1. I used 3 quarts and had my oil level was about an inch away from recommended.

Zembonez

I run Amsoil in my vehicles and change every 5K. Even that is probably too soon but it's what I've always done. You do not need to change the oil every 3K.

sirb16a

actually oil expires and breaks down thats why you have to change it every 3k but synthetic oil can be changed every 5k....as for changing from synthetic your not supposed to go back to regular oil because of the seals they get used to synthetic oil then wear down quiker if you go back to regular oil....

sirb16a

conventional oil is natural oil mixed and wax based which leaves harmfull deposits in the motor..
synthetic oil is a man made oil and cleans all the harmful deposits that convetional oil leaved behind..it lubricates the gears better and helps maintain a clean healthy motor...but just like all oil it expires so you have to change it every 4 months or 5k miles...

20-EM2-05

That is false information. I've went from synthetic to regular many times.

---->http://www.castrol.com/castrol/gener...tentId=7017050

Even Castrol said so.

My regular doesn't seem to wear down quicker since i've switched. It's actually running perfectly fine.

Alan-em2

what gas octane you guys using?

sirb16a

why wouldnt they..synthetic is putting them out of buissness...function n form say they have the best technology in there suspension and that they outway the compitition that doesnt make it the truth does it....

sirb16a

91 octane for em2 with the super secret motor and 89 for the b16