Castrol Syntec Sale!

[MN 986]

For those that have changed to Castrol (or any oil from Mobil1):
Did you flush the system before pouring in the new brand, or just start using the new brand the next time you changed your oil?
I am still using Mobil1, but have strongly considered changing to Castrol and the spin-on filter adapter for my next oil change. I thought I had read a post a while back advising doing a flush before changing oils. I am no expert, so I am just wondering what others have done.
Any thoughts?

[clickman]

Maybe this is the thread you're thinking of, MN:

http://986forum.com/forums/showthread.php?t=26538&highlight=flush

I started it, and took the advice of Jake and did the flush before moving from Mobil1 0w-40 to Castrol Syntec 5W-40. I would have gone to the Syntec 10W-40, but we poor cousins north of the 49th can't get it.

[Idaho Red Rocket 3]

I don't know where Hans gets his opinion of Castrol either. I find it odd. I don't have any experience with Castrol Syntec, but I have used "dino" Castrol in my motorcycles for 40 years and my cars for 37 years. Motorcycles got and get changed at 2000 miles or annually, and cars at 3000 miles. Now my newer cars and motorcycles are on Mobil 1. My son "the genius" says we can go 5000 miles on the synthetic. I have been trying that in the cars for the last year, but I'm not so sure. I'm not worried about the motorcycles because Triumph recomends 10,000 mile changes. My motorcycles only get about 2000 to 3000 miles a year and they get changed every April. I still like 3000 mile oil changes on the cars. Am I wasting oil ?

[MN 986]

Originally Posted by clickman

Maybe this is the thread you're thinking of, MN:

http://986forum.com/forums/showthread.php?t=26538&highlight=flush

I started it, and took the advice of Jake and did the flush before moving from Mobil1 0w-40 to Castrol Syntec 5W-40. I would have gone to the Syntec 10W-40, but we poor cousins north of the 49th can't get it.

Thanks clickman, that is the thread I was thinking about. Did you use the Valvoline racing oil for the flush? New filter for flush and again for Castrol?
That will probably be my plan for the next oil change (if the snow ever melts).

[JAAY]

I change mine every 1500 lately. Just some more insurance I guess.

[clickman]

Originally Posted by MN 986

Thanks clickman, that is the thread I was thinking about. Did you use the Valvoline racing oil for the flush? New filter for flush and again for Castrol?
That will probably be my plan for the next oil change (if the snow ever melts).

I did use the recommended Valvoline oil.
I put the new filter in before the flush and did not change it again.
BTW, the car has been in storage since then and, until finances improve, there it will stay. I.e. it has not been driven with the new Castrol.