James Crisp

So I'm taking my RX8 drifting in a few weeks, I brought it for that purpose and I'm right now having a dilemma,

I want to balancing the health of the engine with not spending a fortune, so my choices are, continue using the Comma 10w40 Mineral oil that I changed it with when I brought car, and a cheaper brand gearbox oil, with the plan of a full oil and filter change before every drift session (maybe every other session if people think it would be safe to leave it that long)

or

Buy some more expensive oil, looking at stuff like Millers NANODRIVE competition 10w40, and Redline MT90/75-90, but I am not in a position to be dropping £100 on oil every month. So hoping the oil will last 6 months or so before needing a change. The vehicle is only used for occasional sunday driving and drift sessions, it isn't used as a daily.

Then kind of the same question for gearbox oil, do I go with a more average priced brand of gearbox oil, but change it every 2/3 sessions, or a high end brand like redline and change it once a year or so.

I'm likely to be doing a session every other month to begin with, so I'd be changing the oil every 2 months with the cheaper oil.

Also for premixxing, does any 2 stroke work, all the threads i've read don't seem to go into specifics, i'm assuming I want a semi-synthetic 2 stroke, for the same reason you don't use fully synthetic in the engine?

Loki

iTrader: (1)

I would (and actually do) go with a good synthethic. Redline is good, but might be overkill, I've been using LiquiMoly with good UOA results and annual/8,000km changes. But, I also run a Sohn.

The reason I recommend that is your priority in a racing application is not longevity, but bearing protection in high heat, high pressure and potentially high fuel dilution scenarios, and I wouldn't trust that to a cheapo mineral oil.

For 2 stroke, you're looking for JASO FD rating. Synthetic/semi-synth is fine, it's not an important factor.

Brettus

iTrader: (2)

My recipe would be :

Engine : medium quality semi synthetic .... change every event (maybe get analysed after first event )
Gearbox : Quality synthetic ...change after 3-4 events
Sohn : don't bother
Premix : good quality synthetic at 1/2 oz/gallon

Loki

iTrader: (1)

Every event eh? I'd go by UOA results. An event is usually an hour or two of runtime? A decent oil should survive that easily, unless you're getting fuel dilution from blowby. Especially if you're topping off what you burn.

Brettus

iTrader: (2)

Yeah ... hard to say what condition it will be in after that kind of abuse .... worth testing it after one event though.

FWIW A lot of the race series guys here change thier oil after every event .... 20 mins practice + 20 mins qual. + 3 x 20min races

James Crisp

First of all, thanks, this was the kind of discussion I was hoping to have.

Secondly, as far as discussion of event lengths, atleast in drifting where I go to, at the amateur levels, they tend to be short and hard on the car, its not like a track say where your running for 20 minutes at a time, the average run is maybe 2 minutes at most, but you spend the majority of that on the limiter with poor airflow due to relatively low speeds.

Hence why I want to ensure I'm giving it the best chance of handling it, I plan to be running an OBD adaptor to my phone and have coolant and oil temps, as well as oil pressure on display during runs, with the plan of ending the run the moment I hit about 105.

Has anyone had experience with Rymax oils, a fella in the local drift community is a distributer for them and has offered me a reasonably good deal.