Hi there, I've done 1 oil change. From the original factory dino oil to synthetic. On the next oil change I would want to switch back to mineral base oil. I understand that normal oil change by draining the engine via the plug underneath will only drain off about half the oil.

So my question is how can I drain off the oil as much as possible?

Thanks.

 

I don't have the answer to your question, but I'm curious why you're switching back to dino oil? BTW, I'm using dino too!

rx8cited

 

You'll get the majority of the oil out the normal method. Getting any more would require tearing down the engine and getting all the oil out of the rotors and oil passageways, and getting the oil out of the oil coolers.

Really, no good reason to worry. Do a good oil change, use a good oil and filter, and you'll be fine.

Dale

 

The only other thing that you can do is break the lines to the oil coolers and drain them and the lines to the coolers. That is where the bulk of the oil is besides the pan. I don't have a manual here so I can't tell you how to do it. Sorry. Best of luck.

 

You need one of these...

http://www.griotsgarage.com/catalog....2050&SKU=10186

 

My car have this popping/thumping sound coming from the Cat thru the exhaust while in station. Especially so after a drive. A question which I've posted here but have got mixed suggestion. So I brought the car back to my dealer. But they need to send my ECU back to Japan for a check-up. So, before they gonna do that, I was advise to use a premium petrol to see if the problem goes away, BUT, I'm already using premium petrol, which is 98 oct.

Then I've recalled, the sound doesn't exist on my earlier ownership of the car, it MIGHT be only after my change of engine oil to synthethic.

Thus, bringing me to the question of draining the oil as much as possible off the engine inorder to have a more accurate answer to the problem.

Remeber reading in the forum here, the car holds about 7-8 liters of oil, where as during oil change, only manage about 4 liters, so a good half the oil is still remain in the engine...

I'm not sure if the change of engine oil is really gonna help, but no harm trying.

 

I see. Keep in mind many people here on the forum use synthetic oil and don't have the problem you're experiencing (at least I've never seen it reported).

Did you use a quality brand synthetic oil (since you think it might be related to your oil)? Is possible you had a bad batch of fuel? Let us know how it gets solved.

rx8cited

PS: If my calculations are correct, then if you do 3 oil/filter changes, you will get rid of over 99% of the oil that's currently in your car. That may be less work than tearing your car apart and cheaper than buying a pump to get all the oil out.

 

Don't forget, also, that the oil change where you put in synthetic only let you replace half the oil with the new synthetic oil (if it was a regular oil change), so you're only running a ~50% synthetic blend right now anyway!

Regards,
Gordon

 

Perhaps compressed air

https://www.rx8club.com/showthread.p...sed#post151660

 

Thanks Nubo, will check with my dealer if they could do that.