The Goods On Oils

[khunjeng]

Just stick with the 5W30 in summer. There's no real need to go thicker as the oil temps will still roughly be the same when its the motor is hot anyway (as the coolant indirectly will remove the heat).

and ur cold start cSt rating will be like much less thanthat of the 10W40....

one question for Busky and trex...I use a 10W30 in my fto and is the goods....I had been using a 10W40 Redline in my Rb25...what u think about lowring it to 10/5W30 as we move into summer...prop. the same as post above.

[Busky2k]

Well why not give the 10W30 a shot in summer. Your motor might like it Unless its a track vechicle etc.

[khunjeng]

its a rb25 worked to 300rwkw...I went the 10W40 redline as I thought it to be a good general thickness...yeah might gove the 30 a go...

what weight and brand do u use??

[Trex101]

its a rb25 worked to 300rwkw...I went the 10W40 redline as I thought it to be a good general thickness...yeah might gove the 30 a go...

what weight and brand do u use??

What's your avg oil temp?

A general rule of thumb is to increase oil viscosity by a grade if oil temp increase by 10'c.

[Busky2k]

khunjeng, stay with Redline, its a good oil. Or Motul's 300V "Double Ester" formulation looks great too (mega dose of Moly!).

[RodMonsta]

hi, im the guy who used to put repco semi synthetic in his r33.

I did my oil change last weekend using mobil1 0w40 and omg can't believe how much smoother it is now. (either mobil1 really good or repco oil just pure cr*p) for some reason i have a feeling its the second one

[Busky2k]

Probably because the M1 0W40 is a bit thinner and would be friction modified. Thus leading to a more smoother and peppier motor

[khunjeng]

khunjeng, stay with Redline, its a good oil. Or Motul's 300V "Double Ester" formulation looks great too (mega dose of Moly!).

I'm going to stick with the redline for sure...I havn't got a oil temp guage - i was going to install one but then didn't. Maybe its a must - I assume its hotter but then again I only take it to the max on the odd occassion and its driven on the street.

btw Trex..finally got into the BITOG..saw a few of ur posts...just sussing out UOA now and will post some results using the 10W30 redline.

[Busky2k]

lol usually Redline has less than stellar UOAs. Sadly.

[Trex101]

I'm going to stick with the redline for sure...I havn't got a oil temp guage - i was going to install one but then didn't. Maybe its a must - I assume its hotter but then again I only take it to the max on the odd occassion and its driven on the street.

btw Trex..finally got into the BITOG..saw a few of ur posts...just sussing out UOA now and will post some results using the 10W30 redline.

Have you found a UOA kit yet? Which company are you senting for analysis? I'm now using Wearcheck usa

[Cubes]

Oil change next week..

I'll be grabbing some Mobil Delvac 1 5w40 for $50

[Trex101]

Oil change next week..

I'll be grabbing some Mobil Delvac 1 5w40 for $50

That's quite a good deal.

[Busky2k]

Yeah, the best oil for your buck with D1. You can't even buy Castrol's or Shells's Group III stuff for that price anymore.

[ZENNON]

Thanks for this thread and everyone who has contributed.

I decided to go for the Motul Turbolight 4100 10W-40

Service this weekend and then track day next weekend

[khunjeng]

Have you found a UOA kit yet? Which company are you senting for analysis? I'm now using Wearcheck usa

yeah I have and got the sample sent to me already. I used a company that Busky2k gave me...I will chnage the oil and take the sample and send it off..I'm excited

Been busy changing ATF and GB and DIFF oils in other cars...omfg ATF changes suck arse.

[ukai]

Oil change next week..

I'll be grabbing some Mobil Delvac 1 5w40 for $50

How did the delvac go cubes ?

Does it matter that is is formulated for diesel engines ?

[Cubes]

Haven't got around to doing the oil change.

The oil is suitable and meets the gasoline API SL.

[rickhead]

Just had an oil change, used mobil 1 10W 50 this time. The mechanic reckons it can easy last 10000 K's between services, this seems a long time to me ????

Edited November 2, 2006 by rickhead

[Busky2k]

^^ Absolutely no problem if your car isnt a track warrior and is tuned well.

[AfterTaste]

What would be the best oil for cold weather? Like up to -40° C.