Synthetic Oil Question
 

Which synthetic oil do you use in your cars, boats, trucks, motorhomes, etc...? I think there are alot of good ones out there right now.

I use M1 in everything. I have gone the Amsoil route, as well as a couple others, but the differences are little between M1 and the rest and I can buy M1 in town just about anywhere so I don't have the mail order headache or stupid high prices.

I use M1 in boat and my Mustang. My truck and wife's car get conventional oil. I would probably try another synthetic, but the M1 is priced right and readily available at Walmart.

I like the Royal Purple and have run it in many gas engines and my last boat and haven't had any problems with it. I change the oil on the gas car engines at about 8k miles. When I watch the oil comming out of the bottom of the pan after 8k miles, it's never burned or anything.

Wifey's Benz gets serviced at the dealer and they use M1. I use Amsoil in everything else; mainly 'cause I can get exactly what I want and it's delivered to my doorstep. With the preferred customer discount it's fairly competitive price wise.

Mobil 1 15w-50 in the boat.
Synthetic Rotella T 5w-40 in the Dodge/Cummins.

Actually, I have a firiend who is a distrubutor for Amsoil, and I get it cheaper than Mobil1 @ walmart!:eek: Right now, I'm running Lucas syn, that I got a killer deal on from Mystic Powerboats! Seems to be fine, but then again, I've hardly run the Nordic this year, between work, $$ of gas, and all the other crap that gets in the way of boating these days.

Amsoil Dominator 15w-50 is the one.

http://www.amsoil.com/storefront/rd50.aspx?zo=1132530

i use royal purple in everything. including my lawnmower and powerwasher.

i use royal purple because it is easy for me to get (i sell it where i work). any synthetic oil is better than conventional no matter what brand.

i also sell amsoil, redline, and more recently roush racing oil.

I run amsoil oil in all my stuff, boat, truck, car and snowmobile.

M1 for all of my sh!t. Been using it for years. Is cheap enough and as far as I know $ for $ you won't find better. Never had oil related problems in anything. Is one of those things where an ounce of prevention....take care of your stuff and it will take care of you.

Great thread/poll Racerngr!

I found this site on a Cummins diesel forum. Haven't tried their oil yet though.

http://www.le-inc.com/productPages.jsp?productID=24

M-1 V-Twin in the boat and bike. Conventional in the cars and trucks.