Oil Help needed re mixing oil

Pabby · 13th April 2011, 13:21

Hi all,
Recently had my car serviced and Honda replaced my 0w30 with 5w30. I still have a load of 0w30 here and I'm wondering if I can top up the 5w30 with it? The guy at honda didn't recommend it but I got the impression he just wasn't sure. Both are fully synthetic and the difference between them can't be much, any one got an educated opinion on this?

Ta

TypeRiter · 13th April 2011, 13:24

No problem whatsoever - personally, I'd stick to the same grades out of just being pedantic - but it's no problem at all if you were to mix.

My Honda dealer recommended 0w-30.
Castrol recommends 05W-30 IIRC
I use 05W-40 Silkolene Pro (Now known as: Fuchs Titan Race)

See what I mean.

Pabby · 13th April 2011, 13:28

Quote:

Originally Posted by TypeRiter

No problem whatsoever - personally, I'd stick to the same grades out of just being pedantic - but it's no problem at all if you were to mix.

My Honda dealer recommended 0w-30.
Castrol recommends 05W-30 IIRC
I use 05W-40 Silkolene Pro (Now known as: Fuchs Titan Race)

See what I mean.

Thanks for that. I'm pedantic too... thats really why I'm trying to get opinions. I'd just like to use up what I have left rather than buying more right now..

TypeRiter · 13th April 2011, 13:31

I have 05w-40 as my main oil in the engine, but recently topped up using 05w-30 that I had knocking around (Castrol edge).

No issues whatsoever.

F6HAD · 13th April 2011, 13:55

Yeah I'd agree with that, no real issues - especially on a NA engine.

The only comment I'd make is that it's quite important to stick to the same viscosity and in fact brand of oil on each quantity in the engine at any one time, but this is (in my opinion) down to the different additive packs that go into each oil by the manufacturer.

So if you mix oils, you may actually end up diluting the effect of the additive packs and cleaners - but in your situation, as both are fully synthetic anyway and it's only over one oil change, I can't see it doing any harm.

Pabby · 13th April 2011, 14:50

Thanks. I have castrol edge 0w30... Honda are now using 5w30 but I think it's mobil.... arrrrgh!

JohnnyBoy · 13th April 2011, 23:53

Dude, your engine will go BANG, no lie

coste1l · 13th April 2011, 23:59

Im on 0w 30 but have 5w 30 for top ups both edge

13th April 2011, 13:21	#1 (permalink)
Pabby Supporter Car: 2007 NHB CTR Join Date: 6th January 2011 Location: UK Posts: 975 Thanks given: 111 Thanked 64 Times in 60 Posts iTrader: (0)	Help needed re mixing oil Hi all, Recently had my car serviced and Honda replaced my 0w30 with 5w30. I still have a load of 0w30 here and I'm wondering if I can top up the 5w30 with it? The guy at honda didn't recommend it but I got the impression he just wasn't sure. Both are fully synthetic and the difference between them can't be much, any one got an educated opinion on this? Ta

13th April 2011, 13:31	#4 (permalink)
TypeRiter Sold a kidney last week! Car: Integra Type-R (DC5) Join Date: 27th May 2009 Location: Ealing Posts: 3,918 Thanks given: 308 Thanked 219 Times in 212 Posts iTrader: (7)	I have 05w-40 as my main oil in the engine, but recently topped up using 05w-30 that I had knocking around (Castrol edge). No issues whatsoever. Last edited by TypeRiter; 13th April 2011 at 14:03.

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13th April 2011, 13:24	#2 (permalink)
TypeRiter Sold a kidney last week! Car: Integra Type-R (DC5) Join Date: 27th May 2009 Location: Ealing Posts: 3,918 Thanks given: 308 Thanked 219 Times in 212 Posts iTrader: (7)	No problem whatsoever - personally, I'd stick to the same grades out of just being pedantic - but it's no problem at all if you were to mix. My Honda dealer recommended 0w-30. Castrol recommends 05W-30 IIRC I use 05W-40 Silkolene Pro (Now known as: Fuchs Titan Race) See what I mean.

13th April 2011, 13:55	#5 (permalink)
F6HAD Car: 2012 F10 BMW 520D Join Date: 23rd January 2010 Location: Halifax, UK Posts: 1,024 Thanks given: 78 Thanked 130 Times in 120 Posts iTrader: (0)	Yeah I'd agree with that, no real issues - especially on a NA engine. The only comment I'd make is that it's quite important to stick to the same viscosity and in fact brand of oil on each quantity in the engine at any one time, but this is (in my opinion) down to the different additive packs that go into each oil by the manufacturer. So if you mix oils, you may actually end up diluting the effect of the additive packs and cleaners - but in your situation, as both are fully synthetic anyway and it's only over one oil change, I can't see it doing any harm.

13th April 2011, 14:50	#6 (permalink)
Pabby Supporter Thread starter Car: 2007 NHB CTR Join Date: 6th January 2011 Location: UK Posts: 975 Thanks given: 111 Thanked 64 Times in 60 Posts iTrader: (0)	Thanks. I have castrol edge 0w30... Honda are now using 5w30 but I think it's mobil.... arrrrgh!

13th April 2011, 23:53	#7 (permalink)
JohnnyBoy Pirate, yarrrr! Join Date: 11th October 2010 Location: Wallasey, UK Posts: 3,508 Thanks given: 781 Thanked 407 Times in 325 Posts iTrader: (3)	Dude, your engine will go BANG, no lie

13th April 2011, 23:59	#8 (permalink)
coste1l Supporter Car: 09 Suzuki Swift Sport white Join Date: 16th January 2010 Location: Sunderland UK Posts: 17,877 Thanks given: 1,113 Thanked 1,990 Times in 1,877 Posts iTrader: (15)	Im on 0w 30 but have 5w 30 for top ups both edge