Engine oil Shell or MOTUL

I use Motul 300V Power 5w40 for my Stage 2 tuned S5 3.0 TFSI.

I have always used 15w-50 on VR6's and 5w-40 on 1.8t's and 10w-60 on the track cars. Try out Rotella T6 5w-40. I ran Motul 5w-40 on my 911 and it made tons of extra noise, went to Rotella T6 under advice from my tuner and it quieted it right down. Been using it on my Saab as well which has a noisy chain setup as well and it worked wonders.

but I bought the ECS Oil Kit for the MK7 that includes O-Ring, OEM Filter, Plastic drain plug and Motul oil and it was $55-60 I think.

I've been hearing lots of good stuff about Rotella t-6 i just changed mine to that the first time this month for the winter

I just changed the oil with 2,960 on the odometer. This is the car's first oil change. Used zero oil since new. New Mann filter and Motul 5-40. Can't prove it but I swear it runs better.

So this morning I went n got some Rotella T6 5w40. filled her up and drove it pretty far. The light didnt come back on. I guess all I needed was an oil change? Sounds a lot quieter in idle too, no ticking besides the fuel injectors.

Initially I used Mobil 1 0w-40 for the first few oil changes... Engine Idle was sort of noisy for a car that had less than 50k miles. What made me switch was when I opened up my oil cap on 2 different occasion to see smoke come out. After that I switched to Motul. With motul the power deliver was more smooth, less aggressive. Engine idle was quieter. The car felt slower but the engine overall seemed healthier. Most importantly i havn't exxperince smoke after opening the oil cap since switching over.

I go back and forth between white jug rotella in the summer and t6 in the winter. It's cheap, and I've never had any issues.

My local AZ sells Mobil 1 10W-40 Racing 4T, Castrol 10W-40 and 20W-50 synthetic bike oil, and the best bargain of the bunch is Shell Rotella 5W-40 Synthetic T6, which is [rated JASO-MA and MA2](http://s7d9.scene7.com/is/content/GenuinePartsCompany/1843126pdf) (although claimed to meet the spec by Shell, it's apparently not officially certified by JASO).

It might be due to a difference in oil viscosity. With usage the Motul oil has sheared down to 30 weight which makes the engine run more freely and cooler as compared to fresh Castrol which has not accumulated enough hours to lose viscosity. It's been well documented that a viscosity decrease lowers oil temperature.