OIL RECOMMENDATION 85-928S, 80k
 

Can anyone give me a good recommendation for oil for my 1985 928S with 80k.
Brand and weight apprecialted. I am in NY and the summers get warm.

The other posts I have read get very involved.
I am ok with spending a little more for synthetic if it is worth it.

What are you using the car for? Daily driver, weekend toy, track toy? All year round, or just a fair weather car?

-Z

Prolly a 5W-30 - Certified Labs STRATA XTREME (can't buy on-line or in stores); have to qualify to get it. Absolutley the best oil available at any price.

I happen to like Swepco 306. It's available in 5W30 and 15W40. Lubey can tell you what weight is best.

Also have an '85 928.... for what it's worth.

JR

As you probably already know, the oil filter you use is very important, too.

Four words: Don't bother with Fram.

Jake's Garage: Oil filters... more than you EVER wanted to know
http://minimopar.knizefamily.net/oilfilters/opinions.html
Oil Filters Revealed - MiniMopar Resources
Engine Oil Filter Study: German Filters

Brad Penn, Penn Grade 1. 10w30 if you don't mind 1 BAR at idle, or 15w40 if you do.

I use it in my '83 928.

85 928s are subject to cam pitting, just like a 911. You need a high ZDDP oil like Brad Penn, Valvoline VR1, Redline or Royal Purple. I run 20/50, factory suggests 10/40.

Rennlist has an excellent 928 forum BTW. There is also a good one here where they would be happy to help you.

I also run an 85 928 in NY. Have fun, and join the 928 Owner's Club. They do stuff.

Same here. I mostly stare at it though.......:eek:

Thats what JR does with his too... He's got so many cars he can't decide which to drive and just stares at them all...

SmileWavy

5W-30 may work for certain applications, but I would hate to put my 944S2 through its paces on the track on a hot summer day with that thin an oil. OTOH, 15W-50 (which I use) may be too thick an oil for the winter months, if that car's a Daily Driver.

That's why it is important to know what the car is to be used for.

-Z

Considering the Cam pitting issue, look for an oil that is not API CJ-4, they have reduced ZDDP levels.