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fasterthanjesus
15-07-2008, 15:48
i had an oil change about 2 months ago. i was looking at changing from 5w 40 fully synthetic to 10w 40 half synthetic.

do i drain the oil first, or would it do no harm to drop the different oil in?

Wobba
15-07-2008, 15:56
It won't do any harm, but I am a bit anal about having things done right so personally I'd drain the lot after getting the engine nice and warm, then fill with the 10w 40.

Coops
15-07-2008, 15:57
i'd change it properly mate, and the filter. as far as i'm aware you shouldnt really mix grades or types of oil

BRUN
15-07-2008, 22:55
can i ask why you would want less protection for your engine ?

eternalife
15-07-2008, 23:50
can i ask why you would want less protection for your engine ?

How so?

Yanoo_
16-07-2008, 08:15
It's not suggested to mix various kind of oils. Use full-synth 5w-40 or 10-w40, it has better property compared to semi-synth. And change the oil filter, too (genuine Renault filter is highly recommended).

fasterthanjesus
16-07-2008, 08:15
im not convinced that 5w 40 fully synthetic is the weapon of choice for me.

im going to try 10w 40 half synthetic.

Yanoo_
16-07-2008, 08:18
im not convinced that 5w 40 fully synthetic is the weapon of choice for me.

im going to try 10w 40 half synthetic.

I used ELF Competition 10w-40 semi-synth once. I had to change it after 400 kms, it was so bad.

G33R7
16-07-2008, 09:56
im not convinced that 5w 40 fully synthetic is the weapon of choice for me.

im going to try 10w 40 half synthetic.

I used ELF Competition 10w-40 semi-synth once. I had to change it after 400 kms, it was so bad.

what went wrong?

Yanoo_
16-07-2008, 13:09
what went wrong?

The engine became loud, especially the hydraulic tappets, the oil pressure was low and the oil was hotter than before.

G33R7
16-07-2008, 14:23
and what do you use now? 5w40?

Yanoo_
16-07-2008, 15:57
and what do you use now? 5w40?

Castrol Edge Sport 10w-60. This oil perhaps is not the best for daily use IMO (fairly high its low temp kinematic viscosity, 172 cSt @ 40 C) but my willi is absolutely a "weekend car" therefore it's not trouble.

Tommo
16-07-2008, 17:17
and what do you use now? 5w40?

Castrol Edge Sport 10w-60. This oil perhaps is not the best for daily use IMO (fairly high its low temp kinematic viscosity, 17poo cSt @ 40 C) but my willi is absolutely a "weekend car" therefore it's not trouble.

I used Castrol Edge Sport 10w-60 for a year and have only just recently changed as it was a bit too expensive and Tweeks were the only place near to me which stocked the 1 litre top ups. Great oil tho, most people on here say to not use this grade of oil but I found it to be spot on, good pressure and temps, and ran smooth. I have recently changed to Helix Ultra 5w-40 fully synth and I'm happy with it so far, think I'll stick to this oil from now on....

slippy
16-07-2008, 22:29
Vavoline 5W 40 Fully Synth for me :wink:

fasterthanjesus
17-07-2008, 08:37
http://cgi.ebay.co.uk/FULLY-SYNTHETIC-ENGINE-OIL-5W-40-OPTIMA-VIMAX-25-LITRE_W0QQitemZ290246210795QQcmdZViewItem?hash=ite m290246210795&_trksid=p3286.m14.l1318

worth a punt ?

Zek
17-07-2008, 12:32
mobile one 15w-40 for me, i can get it for a good price otherwise it cost about 50 quid for 5 liters

BRUN
17-07-2008, 17:31
they dont make Mobil 1 in a 15W-40

Zek
19-07-2008, 17:42
sorry 15w-50 :oops: :roll: