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#180400 - 03/07/06 05:29 AM How many months does dino oil last?
zimmerDN Offline


Registered: 02/10/06
Posts: 175
Loc: Ontario, Canada
I am maintaining a car that doesn't clock high mileages per year, 98 with only 100k km. The driving condition is as follow:

Daily short trips. < 5km each trip
Cold weather start ups. < 30F on average during winter months
Stop and go traffic. < 10% highway

What should my OCI be for this car? Mileage obviously isn't the deciding factor.

I don't want to switch to synthetic because of cost and the mileage on the car.

The oil will be Pennzoil High Mileage; should I just use the regular Pennzoil? Filter will be Napa Nascar Select Spin-Flow; is that better or worse than Napa Silver?

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#180401 - 03/07/06 06:10 AM Re: How many months does dino oil last?
Slick17601 Offline


Registered: 12/04/04
Posts: 1268
Loc: Pennsylvania
My wife's driving habits are very similar. I change regular Pennzoil every 4 months.

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#180402 - 03/07/06 06:15 AM Re: How many months does dino oil last?
Al Offline


Registered: 06/08/02
Posts: 14521
Loc: Elizabethtown, Pa
You could go a year easily. Just get it good and hot a couple of times a month over the winter.

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#180403 - 03/07/06 06:26 AM Re: How many months does dino oil last?
Mr Nice Offline


Registered: 09/12/04
Posts: 14158
Loc: USA
My mom & dad (65 & 73 years old) drive about 4,000 miles a year, sometimes less. They have an 01 and 05 Civic LX and I just change the oil once a year.

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#180404 - 03/07/06 06:46 AM Re: How many months does dino oil last?
BlazerLT Offline


Registered: 08/15/04
Posts: 2359
Loc: Canada
Go with Castrol GTX and a good non-Fram oil filter and change it every 6000kms.

I live in Ontario too and I wouldn't be paying the extra money for the Pennzoil high mileage.

The Castrol GTX is as close to synthetic without going to synthetic and the cost is great.

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#180405 - 03/07/06 08:50 AM Re: How many months does dino oil last?
GoldenRod Offline


Registered: 01/11/06
Posts: 1151
Loc: Clovis, CA
I change mine every 3 months regardless of milage. Perhaps when these oils take a big price hike, I may change my habits. It's one of those "better safe than sorry" type things. [Wink]

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#180406 - 03/07/06 10:10 AM Re: How many months does dino oil last?
mikemc Offline


Registered: 02/15/03
Posts: 1381
Loc: Southeast Kentucky
I use Motorcraft synthetic blend every 6 months, since it takes at least that long to clock 5K miles. I'm not comfortable with more than 6 months on a dino or blend. I suggest you try a 5 to 6 month interval and do a used oil analysis to get some factual data instead of a guess. I would use regular Pennzoil. I like Motorcraft and Purolator filters, I don't have any experience with Napa, but many members here use Napa gold.

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#180407 - 03/07/06 06:58 PM Re: How many months does dino oil last?
wn1998 Offline


Registered: 08/07/04
Posts: 609
Loc: Ilinois
Why not spend the extra $2-$3 per quart and do an annual change? My wife has 160,000 miles on her Cavalier and I started runnings Mobil 1 at a 6 month interval at the 130,000 mile mark. If you go annual OCI with a syn rather than 2-3 dino changes you would be saving some money.

just my .02

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#180408 - 03/07/06 07:11 PM Re: How many months does dino oil last?
Alan Offline


Registered: 07/13/03
Posts: 1462
Loc: MD
Long enough not to worry about it with twice a year OCI's.

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#180409 - 03/08/06 08:17 AM Re: How many months does dino oil last?
va3ux Offline


Registered: 11/12/05
Posts: 963
Loc: Ontario, Canada
I disagree with some of the advice given here. The type of driving you describe is classified as "severe service" by probably any car manufacturer. "Severe Service" is most often accompanied with a 3000 mile(5000 Km)/3 month oil change interval.

Based on that, I do agree that synthetic oil is a waste of money. I would use decent dino oil and change the oil/filter every 3 months (or 5000K). You won't be changing oil because it's sheared down or the ad pack has been used up. You'll be changing it because of fuel dilution, water/acid contamination and potential sludge.

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#180410 - 03/07/06 09:16 PM Re: How many months does dino oil last?
N Heat Offline


Registered: 02/08/06
Posts: 107
Loc: VA
quote:

Originally posted by zimmerDM:
Daily short trips. < 5km each trip
Cold weather start ups. < 30F on average during winter months
Stop and go traffic. < 10% highway

Sounds like severe to me. I wouldn't leave any oil, dino or synthetic, in that car for extended OCI. Go with good quality dino,and change every 4 months.

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#180411 - 03/08/06 01:04 AM Re: How many months does dino oil last?
Doug C Offline


Registered: 11/24/03
Posts: 169
Loc: Colorado Springs, CO
Does anyone remember the old saying "Think months not miles"? I would reccomend at least every 4 months. Perhaps stretch to 6 months.

IMHO.

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#180412 - 03/08/06 07:56 PM Re: How many months does dino oil last?
C.O. Jones Offline


Registered: 08/11/05
Posts: 74
Loc: Miami, Fl
Follow what the manual says. You are clearly in the "most severe" category of driving. I suspect that means OCI's of 3-4k miles or 3-4 months.

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