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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel > Advice on oil type sought
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Topic Review (Newest First)
10-23-2012 04:08 AM
SloopJonB
Re: Advice on oil type sought

Quote:
Originally Posted by bwindrope View Post
I've been using only Chevron Delo 15-40 in my Universal 5432 for 6 years and over 500 hours. I would choose it over other options, and especially over a straight 30 weight. Like was said here, if they had 15-40 back in the day they would have recommended it.

Fun story: Back in the early 80's I was given a VW bug that had been running only 80 W aircraft engine oil for over 100,000 miles. The original owner swore by it. Never leaked, never smoke, nothing. I thought, hell, how can that be? Won't flow right in the passages and such. Started using "normal" 30 weight and of course, starting leaking and burning oil. Went back to 80 W and had no problems until I sold the car years later.
OLD trick for selling cars with worn engines. The basic philosophy behind STP.
10-23-2012 01:33 AM
bwindrope
Re: Advice on oil type sought

I've been using only Chevron Delo 15-40 in my Universal 5432 for 6 years and over 500 hours. I would choose it over other options, and especially over a straight 30 weight. Like was said here, if they had 15-40 back in the day they would have recommended it.

Fun story: Back in the early 80's I was given a VW bug that had been running only 80 W aircraft engine oil for over 100,000 miles. The original owner swore by it. Never leaked, never smoke, nothing. I thought, hell, how can that be? Won't flow right in the passages and such. Started using "normal" 30 weight and of course, starting leaking and burning oil. Went back to 80 W and had no problems until I sold the car years later.
09-14-2012 01:55 AM
SloopJonB
Re: Advice on oil type sought

Definitely use a C rated oil. You should never use S oil in a diesel except in an emergency and it should be changed ASAP - the additive packages are very different.

Years ago most oils had dual ratings (SF/CD) and could be used in either but the formulations have changed dramatically since then and I know of no oil with dual ratings anymore.
09-14-2012 01:34 AM
blt2ski
Re: Advice on oil type sought

Delo or Rotella are probably at least in the US, the most common available diesel motor oils around. Both have the most common 15-40, along with 30 and 40 wt single.

I've been using delo for over 20 yrs on the different diesels I have had, with no major issues. I also know many with rotella doing the same.

As noted, stick with the C rated oils, with the 2nd letter being the higher letter as you can, as that will be the most recent oil type, IE a CG is better than a CF.

marty
09-14-2012 12:39 AM
MarkSF
Re: Advice on oil type sought

If 15w40 was available when they wrote the manual, they'd have recommended it. Are you sure you can't get Shell Rotella T down there? It's a widely available product. I get mine from Walmart. It's the benchmark diesel oil.

But I looked up the Chevron and it looks pretty good.
09-13-2012 11:57 PM
Controlled Jibe
Re: Advice on oil type sought

Thanks for those, that's what we were thinking as well, just needed some validation.
09-13-2012 11:42 PM
JimsCAL
Re: Advice on oil type sought

I agree with CalebD. Stay with a "C" rated oil. I would go with the Delo 15W-40. Pretty much a multi-viscosity replacement for SAE 30.
09-13-2012 09:35 PM
CalebD
Re: Advice on oil type sought

I'd stick with the "C" rating oil regardless of grade. "C" grade oils are formulated for compression (hence "C") engines. The "S" rating oils are for spark plug ignited engines (hence "S").
You've got a diesel right? It is a compression engine. Different additives for diesel.
09-13-2012 09:15 PM
Controlled Jibe
Advice on oil type sought

Hello, We have a Westerbeke (Bukh built) Pilot 10 down here in the Sea of Cortez. We cannot find anyone who sells the (manual recommended) SAE 30 (API C rating) motor oil in Mexico, and so we're left to choose from other alternatives. In the summer, air temps reach 110, and in winter the temps won't go below 55. The oils we have to choose from are:


Chevron Delo 15w-40, CI-4
Quaker State Series 3 SAE40 CF
Quaker State SAE30 SL

The question being: in this climate, are we wiser to stray from the recommended viscosity to stay with the C rating, or downgrade to the S rating to stick with the SAE 30 viscosity (especially in these somewhat cooler winter temperatures to come)?

Thanks in advance

 
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