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#4708995 - 03/27/18 09:39 PM Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary
Artem Offline


Registered: 10/30/10
Posts: 5085
Loc: Florida
Purchased this RX-8 with a dead engine. After rebuilding it at home, this is my break-in run to help flush out the block.

Car is daily driven 45 miles round trip, mostly highway, so I rack up the miles quick, changing the oil practically every 2 weeks or so. LOL

The capacity is 7 quarts but only 4 drain out during an oil change due to the engine having TWO (2) oil coolers, which hold a bunch of oil along with the oil lines, etc. I do a quick drain n fill, leaving the oil filter on to continue doing it's job. Takes me 5 mins. No big deal.

Not sure how long to run it... these engines are hard on oil and I beat the snot out of it daily. I just want it to last, since these fail due to Lubrication related wear on the Apex Seals. Any recommendations? Haha.

Previous 600 mile runs were on Valvoline 10w40 conventional from Autozone clearance.








_________________________
2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart.

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#4709020 - 03/27/18 09:54 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Linctex Offline


Registered: 12/31/16
Posts: 5603
Loc: Waco, TX
I have always read to never use synthetics in Mazda rotary engines
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4709021 - 03/27/18 09:56 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Linctex Offline


Registered: 12/31/16
Posts: 5603
Loc: Waco, TX
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4709023 - 03/27/18 09:57 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Dyusik Offline


Registered: 09/26/14
Posts: 1845
Loc: US-WA
Do you run two stroke oil to help lube the combustion chamber? If I had a rotary, that would be something I'd do. With this much oil being left behind, filtration would be also a concern. Also, I'd go through Polaris for analysis to keep tabs on oxidation and things.
_________________________
95 Cherokee 190K DELO 10W30,XG8
07 IS250 96K FB ?w??,FULL
04 YZF-R1 18K DELO 15w40,XG7317
99 HD XL1200S 18K 76 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

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#4709027 - 03/27/18 10:00 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Linctex]
Dyusik Offline


Registered: 09/26/14
Posts: 1845
Loc: US-WA


Funny, there is a mention of residue. A pure(er) base vs VII loaded one would be cleaner burning, wouldn't it?
The fear of synthetics never made sense to me, this is also widely feared by many motorcycle peeps, " your clutch will [insert assumption]".
_________________________
95 Cherokee 190K DELO 10W30,XG8
07 IS250 96K FB ?w??,FULL
04 YZF-R1 18K DELO 15w40,XG7317
99 HD XL1200S 18K 76 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

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#4709040 - 03/27/18 10:11 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Number_35 Offline


Registered: 07/07/14
Posts: 693
Loc: Winnipeg MB CA
Gorgeous car! I've heard that rotaries have greatly improved rotor apex seal life if 2-stroke oil is added to the fuel. I'm not sure what the recommended ratio would be, but I'm sure there's lots of good advice out there.

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#4709048 - 03/27/18 10:28 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Chris142 Offline


Registered: 06/05/03
Posts: 16495
Loc: Deplorable in apple valley, ca
Many rotary guys add 2 stroke oil to the fuel to lube the apex seals.
_________________________
02 Wrangler super-s 10w30
87 F250 proline 15w40
04 Tahoe super-s 10w30
Z400 Lucas 10w30
KLR250 Maxima 10w40
Can am maveric edge 5w40
57 case tractor 15w40

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#4709056 - 03/27/18 10:42 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Number_35]
Artem Offline


Registered: 10/30/10
Posts: 5085
Loc: Florida
Originally Posted By: Number_35
Gorgeous car! I've heard that rotaries have greatly improved rotor apex seal life if 2-stroke oil is added to the fuel. I'm not sure what the recommended ratio would be, but I'm sure there's lots of good advice out there.


Originally Posted By: Chris142
Many rotary guys add 2 stroke oil to the fuel to lube the apex seals.


I actually use a Rotary specific Pre-Mix Lube added at the recommended 0.5oz per gallon of fuel to help with Apex Seal Lubrication.

I dump 7.5oz with every 13 gallon fill up.

Would love do to a standalone lube injection but those things are expensive. I figured with frequent oil changes + Pre-Lube, the engine should last a good while for me to enjoy my investment / time.



_________________________
2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart.

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#4709058 - 03/27/18 10:45 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Dyusik]
Artem Offline


Registered: 10/30/10
Posts: 5085
Loc: Florida
Originally Posted By: Dyusik
Do you run two stroke oil to help lube the combustion chamber? If I had a rotary, that would be something I'd do. With this much oil being left behind, filtration would be also a concern. Also, I'd go through Polaris for analysis to keep tabs on oxidation and things.


See previous reply about using Rotary specific Pre-Lube that I add to the fuel @ 0.5oz per gallon.

You know, I thought about adding an Amsoil bypass filtration kit, to make sure the oil is super clean and free of particles... haven't pulled the trigger on it yet.
_________________________
2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart.

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#4709065 - 03/27/18 10:51 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Brybo86 Offline


Registered: 10/08/11
Posts: 2903
Loc: Chicago, IL
Greg24, do you see how shiny that Mazda is?
_________________________
08 Honda Accord EX-L 2.4L M1 EP 0w20 145k
01 Kymco People 50
95 Lexus LS400 M1 AFE 0w30 193k
95 Yamaha Jog

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#4709067 - 03/27/18 10:51 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Linctex]
Artem Offline


Registered: 10/30/10
Posts: 5085
Loc: Florida
Originally Posted By: Linctex
I have always read to never use synthetics in Mazda rotary engines




Not sure what the big deal would be. There are several guys on the RX-8 forum using Mobil 1 0w40 for a long time. They haven't posted anything negative yet.

As long as it burns clean, I don't think it matters.

I can understand if using a high end synthetic which was designed to resist break down in the Rotary engine that this could cause build up, etc to occur due to the oil not wanting to burn cleanly.

I'm sticking to conventional for now but some Rotary engine builders suggest a synthetic blend. Take the route down the middle they say. haha.
_________________________
2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart.

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#4709069 - 03/27/18 10:54 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Killer223 Offline


Registered: 05/07/15
Posts: 383
Loc: AZ
i miss my 06 Shinka, i sold mine with just over 180K on it, ran awesome and lived on supertech 10/40 and TCW3 oil in the fuel. was an amazing car.
_________________________
08 6.7 cummins G56
04 5.9 cummins
11 ranger 4.0
16 KTM 250 XC

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#4709070 - 03/27/18 10:57 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
1JZ_E46 Offline


Registered: 04/04/16
Posts: 898
Loc: Oregon
Curious, what sort of oil temps does this thing see during spirited driving? With how often you change the oil, nothing wrong with conventional (other than perhaps deposits depending on heat), but I think a lot of the theories about not running synthetic in rotaries has been disproven these days. I used to be into rotaries, and the few guys I still follow on Instagram with built turbo rotaries all run synthetic. Maybe the Renesis is different?

Nice car.
_________________________
2007 BMW X5 4.8i, 105K: Castrol EDGE 0W-40, Mann
2012 Mini Cooper, 45K: Castrol EDGE 0W-30, Mann

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#4709078 - 03/27/18 11:19 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: 1JZ_E46]
Artem Offline


Registered: 10/30/10
Posts: 5085
Loc: Florida
Originally Posted By: 1JZ_E46
Curious, what sort of oil temps does this thing see during spirited driving? With how often you change the oil, nothing wrong with conventional (other than perhaps deposits depending on heat), but I think a lot of the theories about not running synthetic in rotaries has been disproven these days. I used to be into rotaries, and the few guys I still follow on Instagram with built turbo rotaries all run synthetic. Maybe the Renesis is different?

Nice car.


Sizzling oil temps, probably, hence the need for two oil coolers. I haven't installed an oil temp gauge yet. I just closely monitor coolant temps via a Scan Gauge II mounted on the dash.

I'm all pro for synthetic, if I can find one that burns clean. It would obviously offer better protection, so it's a no brainer. Cost would be the only downside for me. The current 10w40 conventional I picked up on clearance costs $2 a quart. It would be hard for me to dump synthetic every few thousand miles @ $8-9 a quart.
_________________________
2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart.

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#4709090 - 03/27/18 11:42 PM Re: Pennzoil 10w40 - 1,200mi - 04 Mazda RX-8 Rotary [Re: Artem]
Marco620 Offline


Registered: 02/25/14
Posts: 1960
Loc: Deplorable in KS/ fly over
Run a rotery spec oil
_________________________
2015 Civic (R18Z1) 150k mi PUP 0w20/Ceratec,HPS SRI Intake,87e0 fuel Borla Exhaust/Tein Suspension
Go Nashville Predators!

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