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#4535556 - 10/06/17 04:19 PM Dino every 5k or syn every 7.5k? (consumer math!)
TmanP Offline


Registered: 10/30/15
Posts: 436
Loc: MN
Just a question for discussion... curious to hear different perspectives.

If you do the math based on Walmart oil prices, a dino oil change and decent filter comes to $18-20.
A syn oil change and filter comes to $26-30. Rebates and sales do exist, but I've assumed off the shelf prices.

Example:
MS5k for $14.44, and a filter (ACDelco for my application) for $4.29= $18.73. If you run this combination for 5,000 miles, it comes out to .37 cents per mile.

PP for $22.97 and a filter for $4.29 = $27.26. This oil must be run for 7,502 miles to break even (at that same cost of .37 cents per mile).

Although they each could likely be extended further, assume no UOA is done. Which would you choose?
(Let's say a mixture of city and highway driving).
_________________________
2006 Buick Lacrosse 3.8 V6 150,000 mi
2015 Chevy Silverado LT Z71 5.3 V8 30,000 mi
2010 Toyota Sienna 3.5 V6 150,000 mi

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#4535566 - 10/06/17 04:23 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2747
Loc: Wet side WA
If you can't find quality Full Synthetic for under 20.25 you're not shopping.
_________________________
2004 Toyota Corolla 121707
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4535567 - 10/06/17 04:24 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
THafeez Offline


Registered: 08/15/16
Posts: 651
Loc: New Jersey
Synthetic all the way. Better add pack over those 7.5k miles. Though because of fuel dilution in my application and being a certified BITOG hoarder, I can dump syn at 5k and still be ahead. Filters I'll run for 10k if its a fram ultra, M1, RP etc...
_________________________
2004 Toyota Solara SE 2.4 2AZFE
175,000 miles
Valvoline Synpower Maxlife 5W30
Royal Purple 20-400 oversize

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#4535570 - 10/06/17 04:32 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
slacktide_bitog Online   content


Registered: 03/20/08
Posts: 6169
Loc: USA
For the cars in your sig, the Sienna can probably do 10k on any synthetic, even store brand smile

Your other two cars are pre-dexos GM cars, so they can handle whatever OCI is suggested by the OLM, and they can do it on dino smile

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#4535571 - 10/06/17 04:32 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
kpatter Offline


Registered: 08/26/11
Posts: 60
Loc: texas
I got a 5 Qt jug of QSUD for 17.45 at advance auto yesterday.

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#4535578 - 10/06/17 04:41 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
FZ1 Offline


Registered: 02/07/08
Posts: 4727
Loc: Texas
Buy the syn at WM and change it every 5,000. No Uoa. Ymmv

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#4535589 - 10/06/17 04:55 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: FZ1]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2747
Loc: Wet side WA
Originally Posted By: FZ1
Buy the syn at WM and change it every 5,000. No Uoa. Ymmv


Honestly this just makes too much sense!
_________________________
2004 Toyota Corolla 121707
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4535593 - 10/06/17 04:59 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
popcorn

How about VWB for 7500.
_________________________
Thick vs Thin test: 15k / 43k miles complete

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#4535594 - 10/06/17 05:02 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Subaru recommends synth for my engine, so it gets synth.
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
Tokyo Roki 15208AA170 filter

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#4535599 - 10/06/17 05:12 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: JohnnyJohnson]
Dumc87 Offline


Registered: 06/05/10
Posts: 591
Loc: Florida
Originally Posted By: JohnnyJohnson
If you can't find quality Full Synthetic for under 20.25 you're not shopping.


Not arguing there are deals to be had, but I'm not averse paying $26 for Castrol Edge HM 5w20. Did very well in my Matrix.

OTOH, I am refraining from buying too much QSUD from Advance... $9 for 5qt of a full syn is hard to pass up!
_________________________
'90 Z32 - PP HM 10w30
'98 ZJ - PYB HM 10w40
'02 G20 - QS UD 5w30
'09 Matrix - QS UD 0w20

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#4535600 - 10/06/17 05:14 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
I'm thinking through the same thing for my '15 Cherokee. 5k on dino or follow the OLM with synthetic (OLM is programmed for dino, but I don't want to go 7-8k on dino). Using a Mopar filter either way. I'd save about 6 cents a mile if I do 8k on synthetic assuming I can get 6 quarts for $30 or less.
_________________________
15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

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#4535606 - 10/06/17 05:22 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
raytseng Online   content


Registered: 12/11/08
Posts: 2339
Loc: CA
the costs of the materials is inconsequential to the labor costs.

the only way it works out and is justifiable is if you recategoize oil changes as recreational and you would pay to change oil for fun.

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#4535610 - 10/06/17 05:29 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: THafeez]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
Originally Posted By: THafeez
Synthetic all the way. Better add pack over those 7.5k miles. Though because of fuel dilution in my application and being a certified BITOG hoarder, I can dump syn at 5k and still be ahead. Filters I'll run for 10k if its a fram ultra, M1, RP etc...


Congratulations.

Acceptance is the first step to recovery.

Although I am surprised at keeping filters for two OCI. I would never consoder doing that except on my motorcycles.
_________________________
Multiple Diesel and Gasoline vehicles

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#4535613 - 10/06/17 05:33 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
turnbowm Offline


Registered: 05/14/15
Posts: 150
Loc: So. Calif.
I was doing 5Kmi OCIs with conventional oil, but decided to do extended (7.%Kmi) changes with synthetic. The less time I spend under a car the better.
_________________________
2015 Kia Optima EX 2.4L GDI
2015 Chevy Volt

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#4535629 - 10/06/17 05:55 PM Re: Dino every 5k or syn every 7.5k? (consumer math!) [Re: TmanP]
Gebo Online   content


Registered: 09/18/02
Posts: 2115
Loc: VA
Something is wrong with me. I love changing oil as much as I like having sex. And I really like having sex with my wife.
_________________________
'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K


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