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View Full Version : Engine oil? for '93 ps190


rock skier
05-12-2007, 01:32 PM
Alright so the search function won't let me search for the word oil. I'm sure as on every other forum this site has seen it's fair share of oil questions so sorry in advance for another one.

Anyway, I need to change the oil on my 1993 ps190. it's got the ford 351 in it. The manual says sae30w. Does that mean it calls for straight 30w oil or a 10w30? I also have noticed a lot of you guys are running diesel engine oil in your boats, will this work too? I have a diesel truck so I've got more than enough delo400 sitting around for the job.

Also what spark plugs, oil filter, and fuel filter do I need?

bbeach
05-12-2007, 02:32 PM
SAE (straight) 30 will work or - I recently used 5w30 Castrol... EIther one... Cannot remember the oil filter off the top of my head but most autoparts can x reference a 351 Ford motor...

bells197
05-12-2007, 04:41 PM
I would use whatever Mastercraft recommends. You can download the owner's manual from the website if you don't have it and it pretty much has every part # you need. I had a 89 PS 190 and ran the straight 30w in that boat (same engine). I now have a 2002 PS197 and it calls for the diesel oil. I don't know if it makes any difference.

theDano
05-12-2007, 04:45 PM
I just asked skidim about this exact question.....i to have a 93 PS190 and even though the manual does say SAE 30 he recommended SAE 40 since I am down south and said that we use these things like trucks. If you are further north then go with 30.

So it is straight SAE 30 or 40 not 10wXX or whatever.

kah68
05-12-2007, 08:03 PM
I was always told 15W40 so thats what I am running, is this bad?

east tx skier
05-12-2007, 08:34 PM
I was always told 15W40 so thats what I am running, is this bad?

I called Indmar and asked about my 93 with the 351 HO. Answer was 15W40 Marine (or the Diesel stuff with the same specs). Filter is Motorcraft FL-1A

rock skier
05-12-2007, 09:31 PM
I went and got 5w30 after bbeach responded and before all the rest of you replied. So that's what's in the motor right now. Will this be ok until the next oil change?

6ballsisall
05-12-2007, 09:48 PM
I went and got 5w30 after bbeach responded and before all the rest of you replied. So that's what's in the motor right now. Will this be ok until the next oil change?


Thats pretty light oil for a 351w. 10w40 is what I'd be running at a minimum, preferable 20w50. the weight oil you dropped in it is common in newer vehicles that have tighter tolerances than your motor. If it was me, I'd change it.

rock skier
05-12-2007, 09:53 PM
can I drain it and refill with different oil and leave the filter in place? Or will the oils not mix well?

6ballsisall
05-12-2007, 09:56 PM
can I drain it and refill with different oil and leave the filter in place? Or will the oils not mix well?

Sure. I wouldn't stress it. Just don't mix synthetic and dyno oil together.

rock skier
05-12-2007, 11:59 PM
alright cool, looks like I can just use the same delo400 15w40 that i put in my truck then.

east tx skier
05-13-2007, 10:49 AM
See what the rating on the Pennzoil Marine or Shell Rotella is. As long as it's the same, it should be fine.

JohnnyB
05-13-2007, 10:54 AM
I always ran AMSOIL 15W40 in my 92 ProStar.

Now I run Penzoil Marine 15w40 in my 2004 ProStar.

My reasoning for this is:

1) the manual states to run dino oil (non-synthetic) for the 1st 100 hours.
2) changing the oil religiously every 50hours, I'm comfortable with running dino oil without worrying about breakdown, etc

I use Carquest premium filters which are re-labeled WIX Gold filters

rock skier
05-13-2007, 11:23 AM
The Chevron delo400 multigrade 15w40 meets these requirements

Chevron Delo 400 Multigrade SAE 15W-40 meets:
• API Service Categories CI-4 PLUS, CI-4, CH-4,
CG-4, CF-4, CF, CE*, CD1, SL, SJ, SH1, SG1
• ACEA European Service Categories E7, E2
• JASO Asian Service Categories DH-1
• Global Service Categories DHD-1



And the penzoil marine 15w40 meets these
• SAE 15W-40 exceeds API CI-4, CH-4, CG-4, CF-4, CF/SL Service Classifications


So for future reference the delo400 will work in these boats. This is awesome because costco carries this oil in 6gallon packages for way cheaper than I've seen the penzoil marine oil at the store.

bigdabby
05-16-2007, 12:17 PM
Hi:
(My first post!...been faithfully reading for a year...)
I see 20w50 ok to use?? I have a '88 PS190(351 Indmar)- just over 1k hrs. I was wondering about the heavier oil for the older/more hours engines...

kah68
05-19-2007, 08:06 AM
I believe the heavier weight oil is required due to the fact that these engines are under constant heavy load and higher rpm than a car or truck with multi speed transmissions and short high rpm cycles. I think any good quality 15W40 changed every 50 hrs or less would be fine.

93ProStar205
05-19-2007, 09:15 AM
bigdabby - my rule of thumb on high mileage/hour engines is not to mix things up too much. Ex. if you have been running SAE 30, stick with SAE 30 (assuming oil pressure stays withing a normal range). Not sure there is any fact behind this, but I have "heard" that swapping around fluid grades in old/high hour equipment can be a shock to the system and cause seal failures and other headaches. My old 205 had 900 hours when I sold it and I did SAE 30 oil changes twice a year to keep her happy (and it worked). Also if the air/water temp gets pretty high where you are, stick with thick oil.