::.. Oil oil oil oil... and not a drop to drink

[jhsmd666]

I voted castrol syntec 5w50, because 5w40 wasn't on the list.

ditto

[Qube]

What's this? One of each? lol. I'll buy a litre of each and mix it for 6.

[Chris'91'525i]

What's this? One of each? lol. I'll buy a litre of each and mix it for 6.

I got my 5 pack of eBay Mahle oil filters yesterday.
I am going to use a 5 Qt. jug of M1 red cap 15-50 and 1 Qt. M1 yellow cap 10-30 in my LOF this weekend.
So who's good at math ?
What weight will the oil be with this mix ?

[632 Regal]

Chris, you shouldnt mix different oils (difft wts of synthetics OR dino oil), seperation will happen as the car sits and settles...all I know Is I got my ass chewed about mixing a couple years back and they made very logical sence in doing it.

I got my 5 pack of eBay Mahle oil filters yesterday.
I am going to use a 5 Qt. jug of M1 red cap 15-50 and 1 Qt. M1 yellow cap 10-30 in my LOF this weekend.
So who's good at math ?
What weight will the oil be with this mix ?

[Chris'91'525i]

Chris, you shouldnt mix different oils (difft wts of synthetics OR dino oil), seperation will happen as the car sits and settles...all I know Is I got my ass chewed about mixing a couple years back and they made very logical sence in doing it.

Jeff, I had no idea this would be a problem. I figured that they are both full synthetics by the same maker and it wouldn't be a problem, especially when they state their synthetic can mix with Dino oils OK. I had a couple Qt's of the yellow cap that I use to lube my metal lathe, figured I'd use one so I don't have to crack another 5 Qt jug.
That for letting me know !!

[Qube]

For those that voted 15w50... trading off cold starts at 15 for 50 at operating? Hmmm... is that high upper range worth it?