Motor Oil

[68cobra]

I bought an '86 2 months ago & the guy I bought it from had just changed the oil.

I have no hand book on this vehicle, so I was looking for a little help in regard to engine oil.

1. I know I can figure this out via trial & error, but it would be a lot easier if someone could tell me how much oil it holds?

2. What KIND of oil do you recommend? The engine only has 37,000 miles on it. I think the guy was using a synthetic.

Thanks,

j-ray@earthlink.net

[Otto Man]

It holds 5 quarts.
I've used nothing but Mobil 1 in my 85.5 since it's first oil change. And at 87,000 its still purring just fine.
I think the general consencus here is any good synthetic will do the job.

[bob tweedy]

motor oil

most people will suggest you use a synthetic. i use mobil 1. and i use 10-30. of course i only use mine in the good months as i live in montana.
bob

you cant run with the big dogs if you pee like a puppy

[68cobra]

How much does it hold?

Do you do anything special because of the turbo?

How often do you change it?

Thanks,

j-ray@earthlink.net

[svobud]

Originally posted by 68cobra
How much does it hold?

Do you do anything special because of the turbo?

How often do you change it?

Thanks,

j-ray@earthlink.net

The questions were just answered.

1. 5 quarts

2. Some do - some don't. Synthetics or Fossil, both work fine. 10w30 is most common.

3. every 3,000 miles (same as every other car).

[Tourniqet]

Cobra, I was talking to a Motul rep at a car show and he was telling me about his Motul oil. He said a lot of turbo people use it because some oils break down at high temps like a turbo would provide. He said that motul was designed with different types of "organic" synthetics that won't break down at high temps.

I don't know if any of this is true but if you have enough concern about oil, you can look into it. I think they are a mainly european company and don't get much exposure over here.

[pegasus.v.o]

As I understand it Motul products are very popular with a lot of the motorcycle crowd and they are very nice. But, imho it would be better to go with a good synthetic which could be obtained at any autoparts store. I say this purely because the Motul will be harder to come by and you will probably pay a premium for it when you do. Also any synthetic oil is inherently more resistant to breakdown when compared to a fossil oil.

[russde]

Originally posted by Tourniqet
"organic" synthetics

Hee hee,
ya gotta love sales reps...they'll say anything. I'd love to have been there for that conversation..."So tell me sir, how exactly did they synthesize that organic material again...?"

[SVOeric]

yea,, I'd rather have synthetic synthetics, as opposed to organic synthetics

[CETME]

actually, many "synthetic" oils are actually conventional oils that have been refined to a very high level. THe government allows these to be called "synthetic"

Synthetics like Valvoline and most Castrol use highly refined groupIII oil base stocks

Mobil, Amsoil, redline.... etc. use Group IV fully synthetic base stocks.


I use Mobil Delvac1. It is a fully synthetic 5w40 that is used for Turbo Diesel engines. It is also now rebadged as Mobil1 synthetic Truck and SUV oil. I highly recommend it. You can find it at walmart if you must

another one is "synthetic" Rotella T. It is a 5w40 groupIII refined synthetic. A great oil at an excellent price.

[j0eyabs]

I heard its bad to use synthetic on cars with a lot of miles, is it true. My SVO has 105,000 miles and I was planning on changing the oil from motor to rearend to royal purple. Is this ok and can i use either 10/30 or 10/40? I have been using 20-50 valvoline high miles.

[turbizzy]

I used to use Royal Purple full synthetic on my 160,000 mile SVO ever since i first got it with 109,000. The previous owner used regular oil. Some people say not to use synthetic on older higher mileage engines since they are worn out and/or their seals are old and may leak more easily since synthetic oil is thinner and can leak past old seals alot easier. Mine started leaking on the valve cover gasket but i changed it and no probs since.

Charlie at Evergreen Turbo told me that he's seen old turbos with alot of deposits when used with Royal Purple and highly recommended Mobil 1 to be used along with my new T3/T4.

As far as how often to change it, technically every 3K but didn't mike flemming say with synthetic you can go as far as 7K? I would try every 3-5K if running synthetic.

You can put synthetic gear lube in your diff, i did... and trans.

[jef855svo]

When I put synthetic gear lube in my diff, it started to wine.......has anyone else had this experience?

[SVOeric]

Only if you don't use friction modifier.

[jef855svo]

I used the proper amount of friction modifier when I changed the diff fluid last fall. My thoughts are the previous owner of 19 years, never changed the fluid, so when I put new "better flowing" fluid in, the gears were too use to the thicker stuff. Does this make sense? When I get the car out of storage next month, I plan on putting regular gear lube in and see if that makes a difference.