---------------------------------------------------------- Allegro-List Digest Archive --- Total Messages Posted Mon 06/26/06: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:41 AM - Re: Engine Oil - Type and Brands (Airgriff2@aol.com) 2. 05:34 AM - Re: Engine Oil - Type and Brands (Thom Riddle) 3. 05:49 AM - Re: Engine Oil - Type and Brands (Thom Riddle) ________________________________ Message 1 _____________________________________ Time: 04:41:54 AM PST US From: Airgriff2@aol.com Subject: Re: Allegro-List: Engine Oil - Type and Brands Hugh and gang, with only 50 hrs on our Allegro, we don't have much of a track record but we elected to use the oil formulated specifically for the 912 engine and gear box and sold by California Power Systems. I think they call it (AV9). It is a semi synthetic and fits our flying personality as we burn auto and av gas. Fly Safe Bob Griffin near Albany NY ________________________________ Message 2 _____________________________________ Time: 05:34:43 AM PST US From: Thom Riddle Subject: Re: Allegro-List: Engine Oil - Type and Brands Hugh, The Rotax Owners website http://www.rotax-owner.com/ has a comprehensive on-line library of service documentation for Rotax engines. Among the hundreds of documents is one or more about proper oils for the 912 series engines. There are three main things Rotax is concerned about in oil for the 912 series engines. 1) The oil must have Gear Additives because the prop speed reducing gear box uses the same oil as the engine. Because many 4 stroke motorcycles have a similar arrangement some of the oils made for them are suitable for the 912 series engines. 2) The oil must NOT have Friction Modifiers because the gear box has a clutch. 3) If using 100LL Avgas more 30% of the time or more, the oil must NOT be 100% synthetic because of the lead in Avgas. I've been using a semi-synthetic oil sold by California Power Systems designed specifically for the Rotax called AV-9 but will be switching to Pennzoil Motorcycle oil w/ gear addititives(semi-synthetic) as soon as my current case is used up. The AV-9 if fine oil but the shipping cost from California is over $30 and I can get the Pennzoil from a local distributer at about the same cost w/o the shipping charge. I know some Rotax owners use a Fram equivalent oil filter (don't recall the number) but I always buy Rotax brand filter. That is one thing I do not want to gamble with. Also, I use semi-synthetic because we do fly x-country sometimes where autogas in not available and in my opinion, with any use of 100LL at all, the semi-synthetic is better. You might want to consider subscribing to the Matronics Rotax Engine list. Attached is a list of Rotax approved oils I got from one of their service bulletins. Thom in Buffalo Best Oils for Rotax 912/914 engines Semi-Synthetic Highly Recommended Shell Advance VSX 4 APISG SAE 10W-40 Motorcylce w/ Gear Additives Shell Advance VSX 4 APISG SAE 15W-50 Motorcylce w/ Gear Additives Pennzoil Motorcycle Motor Oil APISH SAE 20W-50 Motorcycle w/ Gear Addititives Yacco MVX 500 Synthetic APISJ SAE 10W-40 Motorcylce w/ Gear Additives Yacco MVX 500 Synthetic APISJ SAE 15W-50 Motorcylce w/ Gear Additives Recommended Shell Formula Shell Synthetic Blend APISJ SAE 10W-30 Valvoline DuraBlend Synthetic APISJ SAE 10W-40 ________________________________ Message 3 _____________________________________ Time: 05:49:42 AM PST US From: Thom Riddle Subject: Re: Allegro-List: Engine Oil - Type and Brands --> Allegro-List message posted by: Thom Riddle Hugh, The Rotax Owners website http://www.rotax-owner.com/ has a comprehensive on-line library of service documentation for Rotax engines. Among the hundreds of documents is one or more about proper oils for the 912 series engines. There are three main things Rotax is concerned about in oil for the 912 series engines. 1) The oil must have Gear Additives because the prop speed reducing gear box uses the same oil as the engine. Because many 4 stroke motorcycles have a similar arrangement some of the oils made for them are suitable for the 912 series engines. 2) The oil must NOT have Friction Modifiers because the gear box has a clutch. 3) If using 100LL Avgas more 30% of the time or more, the oil must NOT be 100% synthetic because of the lead in Avgas. I've been using a semi-synthetic oil sold by California Power Systems designed specifically for the Rotax called AV-9 but will be switching to Pennzoil Motorcycle oil w/ gear addititives(semi-synthetic) as soon as my current case is used up. The AV-9 if fine oil but the shipping cost from California is over $30 and I can get the Pennzoil from a local distributer at about the same cost w/o the shipping charge. I know some Rotax owners use a Fram equivalent oil filter (don't recall the number) but I always buy Rotax brand filter. That is one thing I do not want to gamble with. Also, I use semi-synthetic because we do fly x-country sometimes where autogas in not available and in my opinion, with any use of 100LL at all, the semi-synthetic is better. Following is a list of Rotax approved oils I got from one of the Rotax service bulletins. Best Oils for Rotax 912/914 engines HIGHLY Recommended Shell Advance VSX 4 APISG SAE 10W-40 Motorcylce w/ Gear Additives Shell Advance VSX 4 APISG SAE 15W-50 Motorcylce w/ Gear Additives Pennzoil Motorcycle Motor Oil APISH SAE 20W-50 Motorcycle w/ Gear Addititives Yacco MVX 500 Synthetic APISJ SAE 10W-40 Motorcylce w/ Gear Additives Yacco MVX 500 Synthetic APISJ SAE 15W-50 Motorcylce w/ Gear Additives Recommended Shell Formula Shell Synthetic Blend APISJ SAE 10W-30 Valvoline DuraBlend Synthetic APISJ SAE 10W-40 Thom in Buffalo