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5364 Views 22 Replies 11 Participants Last post by  cbrmale
Hi all, as some you know the wife and I have had our Young Gun VT on order for a few months andFriday was the lucky day of delivery. All I can say is AWESOME. the wife had the lucky pleasure of having the car for the first half the day after picking it up at about 11:00am and I didnt get hold of it til after 5:30. so far racked up just shy of 300km and car is cracking along nicely. for all those that have one you know what I mean when I say it just seems to be getting better and those that are waiting believe us it is so so worth the time.
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You need to have a few thousand kilometers up before they begin to perform. Mine has gained from a few longer drives and was running much better after the round trip to Sydney. Despite propaganda to the contrary all engines require bedding-in, which is why it's a good idea to change oil early and get rid of metal from this initial wearing-in phase. My motorcycle had a scheduled first service and oil / filter change at 800km and I did another 3,000km later.
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The 1,500kim service is just an inspection of belt tension and hoses and doesn't include an oil change, unlike my Triumph motorcycle which had an oil change scheduled. I haven't had my 1,500km service yet but it's booked for the week after next.

I did the oil change myself and it's a half hour job with a trolley jack, a pair of axle stands, a 10mm socket and long extension to get to the plastic guard holding bolts, a 17mm socket for the drain plug and a cup-type oil filter wrench (it would be difficult to remove the filter with a strap). The filter is low between the engine and the radiator and hangs vertically. It's easy although both the sump bolt and the oil filter were well-tight. Car now runs Motul 8100 5W40 and it takes 4.5 litres. Parts needed are an oil filter and a crush washer.
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Interesting they changed the oil and I must make sure they DON'T change the oil on my car the week after next. The 5W is the viscosity index at 40 degrees and the 30 or 40 is the viscosity index at 100 degrees (multigrade oils). My personal belief is that 30 weight is too thin for Australia and 40 weight is better (my air-cooled motorcycle is recommended to run 15W50 - where 50 is thicker at extreme high temperatures).

ACEA A1 is a standard for low friction / low viscosity (B1 is the equivalent for diesel engines).

ACEA A3 is a standard for extended drain intervals and this is a combination of the oil's ability to absorb combustion by-products as well as anti-shear (the breakdown of multigrade oil to single, thinner grade over time). Shear can reduce 5W30 to 5W5 which isn't good. (B3 is the equivalent for diesel engines).

ACEA A5 is a combination of A1 and A3 - that is low friction, low viscosity, extended drain. You will not and never will find a 40 weight oil in the A5 category. 40 weight is thicker, therefore it won't meet stringent low friction requirements.

Personally I think a 5W30 is going to turn into water at high operating temperatures, and a turbocharged engine is guaranteed to produce high operating temperatures in warm to hot weather. This is why I have filled my car with 0W40 ACEA A3 oil. So I have extended drain but not low friction. 5W30 is okay for the US, Europe and certainly for Korea, which has a long winter and a short but not hot summer.

My motorcycle as I mentioned above is air cooled and runs oil temperatures of around 100 degrees in warmer weather, and could run up to 120 degrees, and that's why a 50 weight oil is recommended. The reason for the 15W is that something like a 5W50 would need a lot of viscosity modifiers to reach 50 weight at 100 degrees, and an oil of this type would be prone to shearing (especially in a motorcycle where the engine oil lubricates the clutch and gearbox). So the motorcycle has a relatively thick oil when cold (15 weight) and it's down to me to treat it gently until the oil warms (about 10 minutes normal riding).

I would expect a Veloster turbo to run oil temperatures of 90 degrees or more on the open road in hotter weather.

Although Hyundai quoted Castrol Edge 0W30 as being ACEA A5 it doesn't fall within their recommended viscosity range (5W30 or 5W40). There is a risk of engine damage if this oil is used. So the range of A5 oils is quite small and it would be hard to buy most of those products.
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Coolant temperature and oil temperature are two different things. Unless you have oil temperature and pressure gauges you won't know what the oil is doing. As long as oil is 90 degrees or less the 30 weight should be okay, but if it gets around 100 then it's not so good. Oil temperature will rise when the engine is working hard like climbing a steep graded pass on a hot day maybe with the airconditioning on. There are a few steep passes in NSW like Brown's Mountain, The Clyde and so on. Oil is heated by cylinder head combustion chambers, the turbocharger and in the case of the VT oil is sprayed against the underside of the pistons to lower piston operating temperatures. This hot oil falls back into the sump and is sort-of cooled by air flowing under the car before being re-circulated and re-heated. So coolant temp can be fine but oil temp can be something else.

I'm going conservative and will stick with my 5W40.
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