I use 10W 40 mate.Originally Posted by Ivanski
I use 10W 40 mate.Originally Posted by Ivanski
Ooops, should have checked their website.
It will be interesting to see the results in any case.
(I've never seen so many people misquote a quote before )
Cheers
Where do you get this Royal Purple stuff in the UK ? (if it should come out ahead of the Silkolene when tested...)
And how much is it.... ? Arm and a leg or just an arm and a foot or so....
Arm and a Leg for sureOriginally Posted by Evan Jones
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Originally Posted by oilman
Just cost me nearly £90 for 6 quarts
Thought this would be of interest:
Surely the thicker the oil the better!
This isn't always true - even when using a petroleum oil. Although it is true that
heavier viscosity oils (which are generally thought of as being thicker) will hold up better under heavy loads and high temperatures, this doesn't necessarily make them a better choice for all applications.
On many newer vehicles only 0w-40, 5w40 or 10w40 engine oils are recommended by the
manufacturer. If you choose to use a higher viscosity oil than what is recommended, at the very least you are likely to reduce performance of the engine. Fuel economy will likely go down and engine performance will drop.
In the winter months it is highly recommended that you not use a heavier grade oil than what is recommended by the manufacturer. In cold start conditions you could very well be causing more engine wear than when using a lighter viscosity oil. In the summer months, going to a heavier grade is less of an issue, but there are still some things to be aware of.
Moving one grade up from the recommended viscosity is not likely to cause any problems (say from a 10w40 to a 10w50 oil). The differences in pumping and flow resitance will be slight. Although, efficiency of the engine will decrease, the oil will likely still flow adequately through the engine to maintain proper protection. However, it will not likely protect any better than the lighter weight oil recommended by the manufacturer.
Moving two grades up from the recommended viscosity (say 10w40 to 10w-60) is a little more extreme and could cause long term engine damage if not short term. Although the oil will still probably flow ok through the engine, it is a heavier visocosity oil. As such it will be more difficult to pump the oil through the engine. More friction will be present than with a lighter viscosity oil. More friction will be present than with a lighter viscosity oil. More friction means more heat. In other words, by going to a thicker oil in the summer months, you may actually be causing more heat build-up within the engine. You'll still be providing adequate protection from metal to metal contact in the engine by going with a high viscosity, but the higher viscosity will raise engine temperatures.
In the short run, this is no big deal. However, over the long term, when engine components are run at higher temperatures, they WILL wear out more quickly. As such, if you intend on
keeping the vehicle for awhile, keep this in mind if you're considering using a heavier weight oil than the manufacturer recommends.
The best advice is to is to stay away from viscosity grades that are not mentioned in your owner's manual.
Cheers
Simon
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A Quart being 0.95 Litres...Originally Posted by kirkster
It better be good at that price!!
Interesting Simon, I have the 80 litres of Silkolene Pro S that SM ordered here and it's interesting that most people went for the 10W50. I bought 20L of the 5W40 which was included in the delivery. Since my car is only for road use I am glad I went for the lower viscosity
Oh and Simon delivered the oil as promised
Pete R
Pete
SXOC Member Number : 317
OMG why pay that when Silkolene PRO S is better and cheaper!Originally Posted by Papa Lazarou
Cheers
Simon
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Cheers Simon,Originally Posted by Petrol
NW/Mascrat order arrived Thursday as promised
Ready to dish out on Monday at the Mascrat Meet
Pete:
I'll be using 5w40 in winter & no trackdays, and the 10w50 during summer when it will be running on the tarck.
Right ive read this through amongst other "What oil should I use" threads and to say the least im bloody confused.
My car is a 1990 G reg prefacelift S13 with 100k on the clocks.
Ive literally just finished an oil change using Castrol GTX 10w40, now im being told its the wrong oil?
Can someone PLEASE give me a straight answer on this.
WHAT OIL SHOULD I USE?
Cars with 100k I would think will need a thicker oil than a new one?
Make Nissan
Model S13
Year 1983
Engine Size 1.8
Engine Type DOHC Turbocharged inline 4 clylinder
Any Mods Few
Type of driving (track or just road etc) road/track
The oil you currently use (make and grade) Mobile 15w50
Last edited by superclarkey; 08-08-2004 at 12:33.
Originally Posted by mav
Mav,
The Grade you are using is fine, you could move to a 5w-40 if you wanted better cold start protection(road use/short journeys) or a 10w-50 if you are giving the car a workout on the tract etc.
The question is here you could be using a much better quality of oil than what you are using currently.
Cheers
Simon.
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Better quality?
Its Castrol, they are supposed to be one of the best arent they?
I use 15w50 mobile as i find it can handel the temps better and keeps them lower, the 10w40 was rubbish and temps where rising over 130 degrees, with 15w50 and oil cooler and thermostat was keep the temp down to about (85)90-100 degrees.
Change oil every 2000k-2500k depending on how hard i've been driving it.
always let the car idle till warm.
I dont idle till warm but I do stay off boost and I always let the engine idl;e for a while before shutting down.
Well i normaly give it 5 mins before i pull off, try not to give it too much load untill oil is up too temp.
I never load it up when cold mate, always drive it real gentle until she is up to temp.
Yes Castrol do some good oils, however the GTX is just a mineral oil, you could go better with a semisynthetic or better still for your car a fully synthetic.Originally Posted by mav
Cheers
Guy.
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Hi Oilman Just wondered if you could supply a friend of mine with some info on the type of oil he should be using - here's the rundown
Make - Lancia
Model - Delta HF Integrale 16v
Year - 1989
Engine Size - 1995cc
Engine Type - Turbocharged
Any Mods - Evo engineering chip, increased boost, Gp N Headgasket set
Type of driving (track or just road etc) - Just road use, some fast road but mainly poodling on motorway miles
The oil you currently use (make and grade) - only recently purchased and understood to have 10/40 fully sinth of unknown brand in there at present - obviously looking to do an oil change to a trusted source asap
Many thanks
Arry
Edited to add its on about 65,000 miles at present
Last edited by arry; 09-08-2004 at 23:33.