Posts: 460
Threads: 68
Registered: February 26th, 2011
Member Is Offline
Location: Strathbogie Vic
Theme: UltimaBB Pro Blue ( Default )
posted on August 6th, 2014 at 04:50 PM
The Good Oil
Some of you migh know I'm getting my Suabru Brumby EA81 fully reconditioned ATM with rebore, cam grind etc.
I emailed Penrite as to what they advise to use for engine oil. Penrite have been going for a few decades now. They emailed back their answer and
hence deserve a plug for that.
Reply-
lubetech@penriteoil.com
Your enquiry:
Have a Subaru Brumby engine EA81 being totally rebuilt with rebore etc. New oil pump, asling what oil you would recommend. Older style design
engine, rockers, OHV, flat 4 etc. originally Subaru recommended 15W-40 when new. Synthetic??
Based on your enquiry regarding your vehicle our recommendation is:
Following the running in period (500 km on our Running In Oil SAE 15W-40) I'd go to a semi synthetic, rather than a full synthetic. HPR Diesel 15
fits the bill, despite the word "diesel". The diesel detergent properties will not be an issue in the "dirty, older engine" as it is clean and
new. Petrol rating is API SL, so this is fine for the engine given its year of manufacture. Another advantage of HPR Diesel 15 is its availability
-it's a widely used oil, with lots of protective zinc.
You can go synthetic later on perhaps.
Regards,
Alan Jeffery
HPR 15 diesel is 15W-50 semi synthetic. Seems the go for me. Retails around $38 for 5 litres. Tony (Tweety)
Posts: 4270
Threads: 109
Registered: June 3rd, 2010
Member Is Offline
Location: Kyneton, VIC
Theme: UltimaBB Pro Blue ( Default )
Mood: Side ways
posted on August 6th, 2014 at 10:51 PM
Main thing is to stick to the same manufacture of oil, all of that engine work can come undone with using say castrol break in oil then penrite for
final oil.
I have used only penrite break in oil then variety of their semi and full synthetic oils on liquid cooled engines. I have done some UOA ( used oil
analysis) to monitor wear metals to keep an eye on various components of the engine( pays to know what metals your engine parts are made of for this)
ZDDP levels are high and spot on to their claims. Had very very good results of the analysis. very low wear metal levels despite giving my engine
absolute hell for eg. redline power shift 1st to 2nd 2 min after starting on a 5Âșc day.
only problem I have had is due to 2 factors. Non OEM cork gasket( OEM is silicone gasket) and full synthetic, that cork gasket leaks like a screen
doored submarine.
I am currently on penrite break in on my current project car to mainly break in the new timing chain and sprockets and oil pump as well as cleaning
out any traces of unknown brand of oil previously used. Then going to try out 10 tenths race oil 15w50 and go for a UOA after the 3 change or there
abouts. Quite excited about the anti wear additive package in this oil. Can't wait to see the results.
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE