ncp

Guys, I understand the details of which specific lubricants to use has been beaten to death here. That said I do have a specific question surrounding the subject.

A few years back I switched from a synthetic oil to a dino to take advantage of the detergents that went missing from the newer versions of synthetics. I'm thinking of switching back once again to a synthetic that contains the necessary detergents.

Does switching back to a synthetic after using the dino for the last three oil changes, in general, pose any ill effects? Also, I realize not all of the oil drains with each oil change, so is the mixing of left over remnants in the system cause for any concern?

Thanks.

ca993twin

ncp,

I'm no expert, but everything I've read says that you can freely mix dino with synthetics. I think you'll have no ill effects.

ncp

Thank you, Steve.

Mike J

Yeah, mixing is no problem, but I would switch when changing the oil, not adding oil just because I am ****... :-)

No HTwo O

Ncp, I agree with the above. What oil are you thinking about switching to? I highly recommend the Mobil 1 V-Twin 20-50.

I also recommend doing used oil analysis (UOA's) with a lab like Blackstone.

This old post may prove helpful:

https://rennlist.com/forums/993-turb...20w50-oil.html

x50type

Switching is no problem!
Damn....................
I keep one engine for synth and one for l'huile ordinaire..........................

Turbodan

I have read that since synthetic oil is thinner, it can seep out gaskets that are used to dino. this might only apply to old dry gaskets. otherwise no reason to worry. which dino oil were you using?

ronnie993tt

After much reading on the subject, I'm switching to V Twin or a 50/50 mix with M1 15W-50 to increase Zn & P while decreasing Ca. There was some indication that keeping some of the latter extended the life of the oil?

No HTwo O

I think you will be very happy with the V-Twin 20W50.

wagongotya

few of us track guys here swear by brad penn dino oil

ronnie993tt

Yup but it's really hard to get up here, expensive and some pretty knowledgeable guys like Kevin feel you need full synthetic to withstand the turbo heat.

ncp

Hey guys, thanks for your responses. It's been a few days since I've been on.

Since new, I've always been on Mobile 1, then Mobile 1 with an additive starting about six years ago, then finally a complete switch two years ago to Swepco Dino. My intention is exactly as some of you have done and recommended (per Kevin) by going to Mobile V-Twin 20-50. I don't put a ton of miles on the car (17k to date) but change fluid yearly, regardless.

Thanks for the input!

Nick

No HTwo O

Nick, the V-Twin 20W50 is easy to find, at places like AutoZone. It is in the small oil section for motorcycles, not the huge oil display racks. It is about $10 per quart plus taxes.

ncp

[QUOTE]Nick, the V-Twin 20W50 is easy to find, at places like AutoZone. It is in the small oil section for motorcycles, not the huge oil display racks. It is about $10 per quart plus taxes./QUOTE]

Perfect. That'll work. Thanks for the info!

Nick

ronnie993tt

Is that a sale price? It's $16/litre up here.