Matt_NZ

I changed my oil and oil filter late November last year, and I've now done 10,000kms since then in 3 months. My mechanic doesn't think I'll need to change both right now as its been a short time since I changed it last, he says I could do another 5000km's before I should do it. On most drives, I do over 100km's between starting and stopping, mostly at over 100-110km/h (highway speeds), so based on that info, is he correct, or should I go ahead and get it done?

2 Da Max

iTrader: (2)

lol dammmmm i do mine every 1000miles every10,000 i clean throttlebody and intake, and plugs. Every so often i check my belts too

Brudaddy

iTrader: (2)

Even though you run a long time inbetween stops, that is a lot of miles to go inbetween changes. It would be a little better if you used a synthetic oil, but I still wouldn't go that far. I would not, however, jump to the ridiculous side of the spectrum like 2 Da Max and do it every 1k. That is wayyyyyyyyyyyyyyyyyyyyy too much!!! With synthetic, you can get away with like every 5k in normal driving. With regular oil, every 3-3500. Your case might be a little different, but I would still not go quite 10k inbetween.

izzydig

I think 8K km's should be your max. You have to take into account your oil filter as well.

2 Da Max

iTrader: (2)

i just want my car runin strong u no. lol i got a lot of free time too, and my boy works at pepboys so i get castrol syntexs and oil filters for free.

mendon11

yeah that seems like a lot. about 6000 miles. a little too much. 2 da max: you change your oil every 1k miles?!? that seems like a huge waste to me. its not the new oil after that short of a distance is going to make any sort of difference

Ludacris

iTrader: (11)

I switched to synthetic last oil change and its time to change oil again...is it ok to use regular now?

Brudaddy

iTrader: (2)

yeah, you should be able to switch back and forth from syn to reg. why you going back?

guido32

You cannot switch back and forth between synthetic and regular oil!!! Synthetic oils bond so well that a residue is left on the engine internals after the oil is settled in the pan. Synthetic oils are so much better than conventionals that they actually break them down. So, by putting conv. oil in after synthetic will cause the oil to be broken down (new oil comes in contact with residual synthetic on engine internals). This equals trouble. Don't switch back ever. "Once synthetic, always synthetic."

By the way, its just an oil change. Its not that expensive, and if not done at proper intervals can prematurely wear out an engine. Rule of thumb: conventional oil? Change ~3000mi. Synthetic? ~6000-8000.

guido32

You cannot switch back and forth between synthetic and regular oil!!! Synthetic oils bond so well that a residue is left on the engine internals after the oil is settled in the pan. Synthetic oils are so much better than conventionals that they actually break them down. So, by putting conv. oil in after synthetic will cause the oil to be broken down (new oil comes in contact with residual synthetic on engine internals). This equals trouble. Don't switch back ever. "Once synthetic, always synthetic."

By the way, its just an oil change. Its not that expensive, and if not done at proper intervals can prematurely wear out an engine. Rule of thumb: conventional oil? Change ~3000mi. Synthetic? ~6000-8000.

Matt_NZ

It's currently running on synthetic at the moment. Ok, so, general advice is to ignore the mechanic and get it done anyway. Guess I know what I'll be doing next weekend, lol.

Oh, btw, 10000km's = 6213miles

04MaxKiller

You can switch back to regular oil. I know many customers who have without a problem.

rcy

You can switch back and forth without any problems whatsoever. Check out any major oil manufacuter website FAQ about synthetic (try this one http://www.castrol.ca/products/defau...uct_category=1 and look under 'myth vs fact') or the forums at www.bobistheoilguy.com You could even mix conventional and synthetic if you had to.