***** Motors chat - round 12 *****

Is there much difference between 5W30 and 5W40? What issues, if any, could arise from using the 40 when 30 is recommend?

Esel wrote: »

Is there much difference between 5W30 and 5W40? What issues, if any, could arise from using the 40 when 30 is recommend?

5W40 won't flow as well through the engine as 5W30 when fully warmed up (the higher the viscosity, the lower the flow rate), since the oil has a higher viscosity when warmed up it will put the oil pump under more pressure and consequently fuel consumption will increase compared to 5W30.

As counterpoints, the higher viscosity of 5W40 means it will protect the engine better in high outside temperatures and/or harsher driving. It will also make the engine sound nicer (the fact it's thicker will mask some of the engine noises) and increase the oil pressure in the engine (although using thicker oil to try and stop the oil pressure light flickering at idle is beyond daft). The main advantage is it will definitely reduce the oil consumption if a car is burning some.

In reality, there isn't that much of a difference between the two of them, but 5W40 is better for people who are burning oil.

Jaysus even my RX8 only gets serviced twice a year, to be fair I do less than 10k a year.

Been meaning to service mine for the last 3k....

then again that's been mostly running 400km a weekend Dublin -> Wexford so it's not like city work.

And Petrol is expensive. It hasn't stopped me putting 20-30k a year on it last year.

Truckermal wrote:

Well you have a decent motor now! I want to offload our B8.5 A4 next year all going well, What you think of the facelift B9?

What year, engine etc is yours?

Truckermal wrote:

It's a 151 think it's 140HP plenty of power anyway, it's her car I rarely drive it.

Nice, the Mondeo will probably get the boot next year and one of those might be in sight.

Truckermal wrote:

I wouldn't be honest about it the Mondeo is a huge car compared the A4! I would certainly get a very long test drive first paying attention to legroom and pedal position which drives me insane!

Oh ya I know well. The Mondeo is too big, back seats are never used (seatbelts pull like new!) small saloon is what would fit the bill.

Taken from another forum - car porn:

https://rmsothebys.com/en/search#/?SortBy=Default&SearchTerm=youngtimer&Category=All%20Categories&IncludeWithdrawnLots=false&Auction=&OfferStatus=All%20availability&AuctionYear=&Model=Model&Make=Make&FeaturedOnly=false&StillForSaleOnly=false&Collection=All%20Lots&WithoutReserveOnly=false&page=1&pageSize=40&ToYear=NaN&FromYear=NaN

Getting the 325 back on Saturday at last.

It's been off the road since the start of the month. It's coming back with four new shocks, two new springs, top mounts front and back, front anti roll bar drop links, passenger's side front hub, new rear side window seals (they were starting to get perished and the car was starting to make a racket on the motorway), a new steering coupler, and most importantly of all, new diff bearings.

I had planned on doing all of this to the car eventually, and the suspension and steering coupler were planned for this month, but not all this much before Christmas! However, once I knew it was the diff bearings that was the cause of grumbling and vibration noises I had been noticing for the past while, there was no way I wanted to leave it, and I decided since I was going to be spending a fortune on the car this month I might as well get the window seals done then as well.

All that's left now are the wheels, some rust and the interior needs a detail as well, these are planned for the first few months of next year but we'll see what happens!

Tbh the ad-blue alone would be enough to put me off a new diesel just the effort of having to buy it several times a year and put it in. Obviously I know if you are doing big mileage you have little choice but if you are border line it’s a bit off putting especially when you consider it’s not that unusual for modern petrols to be averaging 40-45mpg.

Trucks have been using it for donkey years.

Duke O Smiley wrote: »

I don’t understand AdBlue at all, and to be honest I only really became aware of it last year I think. Just reminds me of 2stroke for old cars and bikes..which we left in the past and with the communists for good reason!

It's actually makes good sense, if you can inject a tiny amount of cheap liquid into an exhaust and dramatically reduce the emissions does it not make sense? It's just like a catalyst, why put precious metals in the exhaust? Same reason

its still around 134 for petrol in galway and 129 for diesel, i was in ballina during the week and it was 127 for petrol 124 for diesel