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Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Thu Oct 04, 2018 9:18 am
by oef0102
Asking what type of oil & filter is best for these Chrysler 360s.
-Standard conventional?
-Synthetic?
-Conventional high mileage?
-Some other variation?

What is the best brand of filter?
Mine is a 1975 with 900-some hours.

Additionally, how often should the transmission fluid be changed? is there a standard filter and/or gasket size to reference if trying to buy at a local parts store?

Thank you all for the help,

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Thu Oct 04, 2018 9:40 am
by Fastjeff
Since these motors use flat tappet cams, you MUST use an additive to prevent rounding over the cam lobes. (With 'modern' roller cam motors this is not a problem.) I use shell Rotella oil for this reason, and douse it with half a bottle of Lucas ZDDP additive, just to be sure.

Jeff

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Thu Oct 04, 2018 10:01 am
by oef0102
Shell Rotella- what weight? I believe its only available in 15W-40?

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Thu Oct 04, 2018 10:40 am
by shade2u2
Shell Rotello is available in straight 30W also.
I have used 15W40 in the past but I am going to 30W Shell rotello plus the ZDDP.

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Thu Oct 04, 2018 10:43 am
by oef0102
As in 10W-30?

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Thu Oct 04, 2018 10:54 am
by shade2u2
No. Straight 30W. Many recommend it for these older motors. Probably not ideal if you run it in the winter.
I have 1986 454 Crusaders and a single 360 in my old 28. I plan to go to 30W in both.

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Fri Oct 05, 2018 7:24 am
by Fastjeff
I strongly recommend multi-viscosity oils in any motor--especially an old motor with worn oil pump drive gears.

One of the greatest automotive advances is multi-vis oils, so why not use it?

Jeff

PS: I use 15W-40 in mine.

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Fri Oct 05, 2018 3:56 pm
by bcassedy
So Jeff, would you then recommend a 15w40 High Mileage oil for '88 (original - 1000 hours approx each) 318's?

Asked the "decent shade tree mechanic, but not an expert" guy.

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Sat Oct 06, 2018 8:41 am
by Fastjeff
Absolutely, but also add some ZDDP additive (like Lucas makes; half a can per engine).

Jeff

Re: Engine oil, transmission fluid and filter types for Chrysler 360

Posted: Sat Oct 06, 2018 10:23 am
by bcassedy
Thanks, Jeff.