SC Engine Oil Change - Air Lock Risk?

[NeilH]

Hi all,

I suspect this isn't a "risk" afterall - introducing an air lock while doing a regular SC engine oil and filter change? My storage guy suggested not even he does his own SCs because of it! He's not normally a scaremonger.....

It'll be my first go at an oil change on a 911 (and dry sumped) but done all my own on other cars (wet sumps) over decades!

Loads of youtube, and 911SC Companion manual, suggests no issues;

- get up to hot temperature
- BIG(!) bucket to catch/drain main tank via drain plug
- Then drain sump/block (mine has the larger case/sump filter pan with central drain plug.
- swap filter
- fit 2 x plugs and new washers
- 9ltrs of oil initially - I'm using valvoline VR1 20/50 mineral
- run up to temp, check level and top up?

Many thanks,
Neil

 

[911hillclimber]

Yep, but imho you level the oil between Max and Min on the dip stick running hot at tick-over.
Car level of course!
In my 35 years with an early 911, never read about an air-lock happening.

 

[NeilH]

Yep, but imho you level the oil between Max and Min on the dip stick running hot at tick-over.
Car level of course!
In my 35 years with an early 911, never read about an air-lock happening.

Yes, I don't know where my storage guy got the idea. He is a retired mechanic though doing a few restorations/ jobs on costumers cars - ex-Mercedes, I think.

Thanks for reply
Neil

 

[T911UK]

Never heard of it, do as you plan, sounds spot on!