Engine oil L77?

[Manwhore]

Ok guy's i know oil has sorat been covered but still have a question.
I have the 2012 L77 motor in manual form, i have a 1900 blower and small cam just making 550 at the wheels.
The engine builder i used reccomends hpr 30 from penrite just wondering if this is to thick?
I know adding the blower needs the thicker oil from what i have read in terms of the 60w but this is a 20-60 mineral changed every 5000km. Just wondering if i should drop down to hpr15 it's a 15-60 oil so just that bit thinner.
Thoughts welcome.
Thanks
Dave

 

[Big-Al]

i wouldnt go thicker than 10W40. These engines don't need or like thicker oil. The blower really makes no difference to the tight tolerances found inside a modern V8 and a thick oil just won't be able to get where it needs to go to totally protect your engine.
Fully synthetic is the way to go, mineral oil is old school.

 

[WogBoyz]

as Big AL said id go a 10w40, that's what ive been using

 

[blackve76]

I'm a 10w60 edge man in my ute cam /heads etc its not a daily.

The Girls's 09 SS with the L77 was on 10w40 and now really cold in Adelaide I just put in 5w30 edge, limited afm lifter tick now.

I'd go 10w60 with the blower adding heat.

 

[Manwhore]

Yeah i thought she was to thick thats why i asked but have read for heat it needs the 60w got a service due in a month ill throw some thinner stuff in

 

[Manwhore]

Ok just been looking at the quotes from diff places when i got the work done and 3 of the 4 shops putwhat type oil they use.
1 uses 25-50w Lucas oil
2 uses 20-60w Penrite oil
3 uses penrite Hpr15 a 15-60w

all 3 shops are pretty well know for performance work wonder why the recommend sucha thick oil. i asked my builder he said you change every 5000kms so why use synthetic and they have found better results with the thicker on Ls motors. arrrh bloody oil

 

[lmoengnr]

I'd go by what your engine builder recommends.