Mixing Engine oil

y dont u just buy oem oil tomorrow top it up and save the rest for another time wen u need topping up....or cant u leave oil once u open it??...

oil has no specific used by date...

buy whenever use whenever

I had Feo 10w-30 in my car Sythetic? Running low on oil so bunged some $10 25W-50 Mineral oil down its mouth hole. It loving it.

But when i have my heater on I can smell oil. Hahahahaha Ghetto Fumes.

This might seem stupid. But whats OEM oil??

Also what the best oil for a DC2 VTIR?
I just used the most expensive oil from Kmart in mine, it said ¨made for performance engines¨ on it

Quote:

---

Originally Posted by Felix

This might seem stupid. But whats OEM oil??

Also what the best oil for a DC2 VTIR?
I just used the most expensive oil from Kmart in mine, it said ¨made for performance engines¨ on it

---

OEM oil is usually the car-branded oil. In this case "FEO" soold by honda dealers for about $26-30.

Best oil ? ID go FEO as a standard...and the most expensive oil from KMART is AFAIK castrol magnatec ? Still , next oil change i would go buy a honda oil filter + 5l of honda oil and keep the fluids for now on from honda :)

Righteo, will do.
Can you get the FEO oil from anywhere else except Honda dealer?

Quote:

---

Originally Posted by bennjamin

OEM oil is usually the car-branded oil. In this case "FEO" soold by honda dealers for about $26-30.

Best oil ? ID go FEO as a standard...and the most expensive oil from KMART is AFAIK castrol magnatec ? Still , next oil change i would go buy a honda oil filter + 5l of honda oil and keep the fluids for now on from honda :)

---

i used to wait until the KMart "storewide 15% off" sales to get my Mobil 1 as cheap as possible...

this was at Hornsby. so maybe it is store specific what they sell...

BTW - i am running two different brands and weights in my brand new B20VTEC, mixed in with plenty of teflon assembly lube too... going to change it at 1500km though...

Quote:

---

Originally Posted by Civic Type R

If you mix full synthetic with mineral, you will get a chemical reaction which will cause the oil to breakdown and act like an acid and hence eat away at your internals. Hey chuck some Battery acid in your engine while your at it - it does the same damage.

---

are you sure, u freaken me out.
My car was running on Mobil 1 and since it burn alittle bit of oil, I put in some FEO oil or magnetic.

The bottle say is ok to mix oil but just that it may not perform to its purpose.

yes im sure.

I thinbk you need to read this again [Civiceg9].

Quote:

---

Originally Posted by Civic Type R

Ok, here it is.
Changing engine oil can be ok and it also can cause some serious damage if you mix the wrong oils.

If you use mineral oil then you can only mix mineral oils.
If you use full synthetic oils then you can ONLY mix other full synthetic oils with it.

If you mix full synthetic with mineral, you will get a chemical reaction which will cause the oil to breakdown and act like an acid and hence eat away at your internals. Hey chuck some Battery acid in your engine while your at it - it does the same damage.

If you use mineral 10w 40 then yes u can put in 5W 30 and or 15W 50 in there no probs. Same as for full synthetic.

---

hmmmm, so what about when you change from mineral oil to synth?

do you have to flush the engine? how many times? by what method, what with?

also - can you please explain the chemical *reasons* for the kinda illogical:

oil + oil = acid?

equation you suggest occurs when adding mineral oil to sythetic oil or vica versa???

please, i am keen to know why!!!

oh, and further - care to explain what "semi-synthetic" oil has got to do with all this stuff?

is it a mix of mineral oil and synthetic or something else entirely?

and can you mix mineral oil and semi-synthetic or semi-synthetic and full-synthetic? or will this make acid too?

Quote:

---

Originally Posted by tinkerbell

hmmmm, so what about when you change from mineral oil to synth?

do you have to flush the engine? how many times? by what method, what with?

also - can you please explain the chemical *reasons* for the kinda illogical:

oil + oil = acid?

equation you suggest occurs when adding mineral oil to sythetic oil or vica versa???

please, i am keen to know why!!!

oh, and further - care to explain what "semi-synthetic" oil has got to do with all this stuff?

is it a mix of mineral oil and synthetic or something else entirely?

and can you mix mineral oil and semi-synthetic or semi-synthetic and full-synthetic? or will this make acid too?

---

What part of my explanation dont you understand Tinkerbell ?
Read it again and re read your post :thumbsup: