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Re: What is the best Oil to use in a Rotary Engine?
Posted: Tue Oct 20, 2015 7:55 am
by Gewdraa
Interesting, there are many benifits in using a synthetic oil, low viscosity, helps engine cranking, additives etc, longerlife of oil,
Here is an interesting faq
http://www.royalpurpleconsumer.com/reso ... ry-engine/
Anyway I shall keep searching for information
Re: What is the best Oil to use in a Rotary Engine?
Posted: Tue Oct 20, 2015 9:21 am
by Gewdraa
If anybody is interested here is a nice oil comparison tool, its free,
Really shows the advances in oil over the years.
https://www.lubrizol.com/EngineOilAddit ... fault.html
the valvoline race oil specs are as follows
SAE 20W-50
API SL
ACEA A3/B4
Ford M2C-153E
GM 6094M
so any acea A3/B4 meets these specs,
Re: What is the best Oil to use in a Rotary Engine?
Posted: Tue Oct 20, 2015 11:47 am
by Gewdraa
Re: What is the best Oil to use in a Rotary Engine?
Posted: Tue Oct 20, 2015 4:35 pm
by spoddy
apexheid wrote:spoddy wrote:Mazda always recommended castrol oil.
rx8's comment don't count here.
Oh I know they don't so didn't mention the 5w30 magnatech I use. Just re-irrerating what Tool and few others have said that Mazda recommended castrol engine oils and for their diff oils etc. I have heard of royal purple in the states being used.
Re: What is the best Oil to use in a Rotary Engine?
Posted: Tue Oct 20, 2015 5:25 pm
by Gewdraa
Seing as we dont now the history of engine we are going to install, I shall recommend mineral oil, but if this was a new build I would be putting synthetic in it,
Points noted about seals and carbon deposits.
We have three engines, the best compresson one is going In
Re: What is the best Oil to use in a Rotary Engine?
Posted: Wed Oct 21, 2015 9:35 am
by Gewdraa
interesting site about oil specification
http://www.carbibles.com/engineoil_bible.html
Castrol recommends Magnatec 10W-40 A3/B4
Re: What is the best Oil to use in a Rotary Engine?
Posted: Wed Oct 21, 2015 12:09 pm
by TOOL
Peanut oil
Re: What is the best Oil to use in a Rotary Engine?
Posted: Mon Jan 25, 2016 6:18 pm
by hoodedreeper
Just read through this topic and i'm still indecisive to which oil to use.
As far as i'm aware the car still has the OMP,so do i go with 10w30 mineral,20w50 mineral or Castrol 15w40 semi?
Re: What is the best Oil to use in a Rotary Engine?
Posted: Mon Jan 25, 2016 7:46 pm
by A7RXY
I've used Castrol Magnatec 10W40 or its predecessor for the last 30 years in mine and it's still running ok.
Dibs
Re: What is the best Oil to use in a Rotary Engine?
Posted: Tue Jan 26, 2016 1:35 am
by TOOL
My intended next oil purchase:
http://m.ebay.co.uk/itm/370546840579
It's the right grade. It's the right weight for our climate. It's cheap as you need to change it regularly. Even more so on a BP due to fuel contamination of the oil.
£2.25 a litre
I use the same brand (but right spec for the car LL04) in my diesel BMW.
