Oil Issue

[Boosted Ejt]

Hi I'm new to this forum had my car for about 2and a half years so have got to know my car well just a quick question I usually service my car with motul 300v chrono 10W 40 every 5000kms but while I was down south I needed to top up oil and the best I could get was penrite hpr 15w 40 semi synthetic would've used no more than about 800 ml and I'm just really worried if I done any damage to it drove about 300km since top up am I better off not driving it till I do an oil change as it seems a bit different when driving. Cars a r33Gtr with mild mods sorry if question has been asked before couldn't find a specific answer relating to my concerns. Any advice will be greatly appreciated

[Hadouken]

you dont mix viscosities.

Google it.

[Humbla]

I've had to do this my 25 still works. :-)

[Boosted Ejt]

Yeah I didn't realise it was that important the guy at the store said it should be fine.

[Boosted Ejt]

Thanks did you feel any difference in acceleration and just general driving

[Hadouken]

my motor blew up after 550km of mixing oils

[Boosted Ejt]

Is that how sensitive engines can be, definitely answered question not driving my car anywhere till I service it not worth the risk

[Hadouken]

I was only joking.

But seriously, I'd change the oil at your next convenience.

[Boosted Ejt]

Lol, I will do thanks for your advice

[breaker1845]

It's pretty easy/quick to drop the oil and put some fresh stuff in it and change a filter. Even easier with a relocation/oil kit.

[Boosted Ejt]

If only all work on the car was that easy, i'll change it this weekend just have to find a greddy oil filter somewhere in Perth except from eBay takes too long to come

[Hadouken]

Bro. Take a step back.

You don't need a greddy oil filter. That's like saying I need a trust sump plug

[Boosted Ejt]

I was told by my mechanic the other ones don't work well on performance engines. If they the same will just get a normal one

[Hadouken]

I think it's time to find a new mechanic

[niZmO_Man]

That's weird. I've been using Ryco bought from the nearest Supercheap Auto for years. Runs fine on my RB26DETT and I track it occasionally.

[Boosted Ejt]

In that case I think my mechanic doesn't know what he's talking about if no one else has had problems with standard ones it makes no sense getting more expensive ones

[89CAL]

I run Ryco, i use the premium ryco ones but still cant be much different.

Forged engine and so on. No dramas at all

[breaker1845]

Ryco are fine, you need a new mechanic mate. The only thing the greddy filter gives you is a big hit to the wallet that you don't need.

I bet if you opened them up internally they would be very similar if not the same type of filter material and design.

The comparison has been done between an OEM and Ryco filter and the difference between the two was not much.

[jiffo]

Mate I think you need to apply your own thoughts instead of taking what your mechanic says as gospel.

At any oil change, do you really think every last cc of oil comes out that sump plug?

Of course not, there's always going to be dilution of your new oil with old oil remaining in galleries and various pockets.

Now if you noticed some dramatic change in your car's road performance after you topped up with 800cc of different viscosity oil, I'd be more concerned how come it needed topping up at all.

[Boosted Ejt]

I know not every drop comes out at oil changes I'm definitely looking for a new workshop, I thought it could be losing oil somewhere cause usually when I service I don't require any top up. As for dramatically losing performance just was told oil was to thick to flow properly but I now think that's not the case and I doubt it needs a new dyno tune after a few months. As for the filter I done some research and it's definitely not worth the extra cash so going to be using ryco filters from now on.