Fortuna

the best oil for hot summer?
your help is necessary to me. I couldn't find this subject through search.
What oil it is better to use for hot climate 85 - 105 F.
Porsche 993 1994 cabrio

Opo

I'm in texas where is hot and humid and I use mobil1 15w-50 , but I'm sure there's others you can use also .....

Luftd993

This is from the drivers manual.

NP993

Canola

LexVan

Look into Mobil V-Twin 20W50 or Joe Gibbs DT50 15W50 or Brad Penn 15W50 or Mobil 15W50. OEM Porsche filters. Rinse & repeat every 5,000 miles or yearly.

AKTUNG

AMSOIL 5W40. I kive in 100 degree plus weather. Best oil there is for my money.

Fortuna

Thank you!
This is a great information

pp000830

Summer never seemed to be an issue for me. Just make sure you don't use too thick an oil in winter. If you do you may pop the seals off the hydraulic lifter cartridges and it is expensive to fix the resulting noise that results.
Andy

Fortuna

Mobil 1 New Life 0W40
http://www.ebay.com/itm/Mobil-1-0W-4...item4171934810
this is a good choice?
this is the most expensive brand of oil

Steve Weiner-Rennsport Systems

That stuff is OK for the water-cooled engines, but FAR too light for the air-cooled ones.

KNS

Sorry to revive an oil thread but...

What are the coldest temperatures you would safely operate (as in morning cold start) a 20W-50? Currently running Brad Penn. My old '84 owners manual says you can go down into the 20s F. That seems too cold for a car with lifters.

matt777

The generic SAE oil sites will say -15C but I wouldn't run it below 5C. The oil gets more viscous as the temp drops and more wear will occur.

jhg41977

I dont have a lot to add to this other than personal experience and conversations with others. I ran 0-40 as recommended by the dealer. It seemed fine when i drove it every day. When it sat over the winter, only being driven once a month while it was in florida, the start up got very noisy. Several people told me it was not a big deal just let it warm up. Several people suggested a higher weight oil. I changed to a higher weight oild when I returned to NH in the spring.

This fall I tore the engine down to make some repairs and freshen up the rest. When I looked at the cams two lobes had what could be described as pitting. The corresponding rockers had flat spots. The cams need regrinding (I replaced them instead with a set of low mile cams) sevral rockers will need replacing amd all will need resurfacing.

One of the rebuilders I spoke with told me he is seeing more and more of these and it is his belief that the low viscosity oils are the cause. I would listen to the rebuilders on rennlist here and go with a higher viscosity oil.

Emo993

+1 Lexvan, all good, I'm changing to the Joe Gibbs DT50, made for air cooled porsche engines, higher zink to protect cams etc. mark