So I am planning on running either 10w-30 or 20w-50. I live in the southern part of Texas, pretty damn close to Houston.

I want to know which one would be better and I want to know what other people around the area run. The temperatures don't ever really drop below freezing and it can get over 100 degrees (Fahrenheit) during the summer.

 

If the temp never goes below freezing then 20w-50

 

 

 

Alright then what oil would be best. I wanted to go full synthetic Idemitsu but I know that others prefer to run mineral since it has less carbon deposit.

 

Lies, all of it. There are hundreds of pages in several threads discussing oil without any conclusion. Read through that and draw your own conclusions. There is no single right answer. I'm not even sure there are any wrong answers.

 

Well, castor oil is probably a wrong answer.

 

Whale oil.
It's expensive though, gotta go through a lotta whales to keep up with Renny oil changes.

 

Actually whales would yield quite a few hundred gallons of oil each, you'd likely reach the rebuild point of the engine before exhausting the oil supply from just one whale :D

 

I like where this is going. Perhaps we can harvest the oil in some renewable fashion. If we only need 8L every few months, surely having a pet whale and a lyposuction device would set you right up. Take that, big oil.
Technically, you would be removing oil from the ocean and thus qualify for environmental tax credits?

 

Just gonna say this: a common misconception is "thicker is better."

Technically, you want the thinnest oil that won't break down due to heat. It's easier for thinner oil to get between passages, and a low W rating would have a faster flow on cold crank.

I would think 10W30(or 5W30) would suffice if you are not tracking. If you track, then 10W40.

 

But how many whale species are suitable for producing those quantities, mainly Sperm Whales, and how much after refining, packaging, plus demand for all the 8s out there, adding the cost of time and Whaler crews' wages, expenses, etc.
Adds up pretty quick.

 

I wonder if you could 'harvest' oil from a whale like you would wool from a sheep, I was always of the mindset that they had to give their lives, that said I'm not sure I even have a pool big enough to keep one whale.
But on the topic of renewable, why not the oil from your local fry shop, if its good enough for a clean burning diesel VW, wait is there even such a thing has a clean burning VW diesel now?

@BigCajun good point, I hadn't considered a mass switch over by the entire RX8 community to sperm oil, maybe we should start funding for large rotor shaped pools to house all these whales.

 

Hey, That's outside the box thinking.
I like it.

 

Pretty sure that with enough genetic engineering you could have a whale that works like a sheep. This is going to take R&D. Technically we're saving the whales, so once again, tax credits.

 

Used vegetable oil would be pretty filthy.

And you also probably have to design your engine around the characteristics of vegetable oil, like different flow, etc.

 

 

If you strain it, it ends up being pretty clean, plenty of restaurants reuse the fry oil after straining out the particulate several times before dumping it for good.

You would probably want Crisco 10W30, if its gets cold where you are, don't want it turning into shortening and killing the engine.

 

 

ky
astro glide
**** ease

take your pick cause you are gonna get fucked with a rebuild at some point

btw fry oil isnt as clean as people think. my bro has a waste oil burner to heat his shop and oftern gets used fry oil (strained), mixed with used oil the furnace gets pretty filthy and need to be cleaned/filters pretty often

 

Dang, I have a whole gallon from my deep fryer from a batch of hot wings.
Marinated them in Louisiana Hot Sauce and Cayenne Pepper.
Maybe since it's injected into the combustion chamber it may add a little extra octane boost.

 

 

Or 5W if really gets cold.

Yeah, that's what I thought. Used fry oil still wouldn't be clean enough for a car engine even after being strained.

OP: just run an UOA if you are worried.

 

Lol, I ******* love this community. I've drawn out a couple of options I guess it's really up to the test now. Thanks guys.

 

This is actually the only good advice in this thread (including my own half-hearted attempt).

Do a VOA and then periodic UOA's and don't worry about it.